Related
Hey all,
First time I've posted here as I can't find anything on the internet regarding this issue.
My phone is not rooted and on stock rom I (stupidly!) changed the runtime mode to ART when reading an article on how to extend battery life. I did this and then since doing that my phone won't start up and when plugged in to an outlet or a PC the usual battery icon comes on and then drops out after a few seconds, and then comes on again, and then drops out and it just keeps on doing this.
Theres a youtube video available but I can't post a link here because I'm a new user.
When the phone is plugged in to a PC it doesn't recognise the device as the power just keeps dropping out so I can't flash stock ROMS and I can't get to recovery to reflash the phone to factory settings (it just turns off)
Any genius out there to help with this?! Much appreciated
purplechris83 said:
Hey all,
First time I've posted here as I can't find anything on the internet regarding this issue.
My phone is not rooted and on stock rom I (stupidly!) changed the runtime mode to ART when reading an article on how to extend battery life. I did this and then since doing that my phone won't start up and when plugged in to an outlet or a PC the usual battery icon comes on and then drops out after a few seconds, and then comes on again, and then drops out and it just keeps on doing this.
Theres a youtube video available but I can't post a link here because I'm a new user.
When the phone is plugged in to a PC it doesn't recognise the device as the power just keeps dropping out so I can't flash stock ROMS and I can't get to recovery to reflash the phone to factory settings (it just turns off)
Any genius out there to help with this?! Much appreciated
Click to expand...
Click to collapse
Even the bootloader?
Bootloader
Lethargy said:
Even the bootloader?
Click to expand...
Click to collapse
I can get to the bootloader by pressing volume down and the power button and that comes up fine, when I choose START or RECOVERY it just turns off.
purplechris83 said:
I can get to the bootloader by pressing volume down and the power button and that comes up fine, when I choose START or RECOVERY it just turns off.
Click to expand...
Click to collapse
Try flashing the factory images. If anything fails post the entire cmd
Flashing Images
Lethargy said:
Try flashing the factory images. If anything fails post the entire cmd
Click to expand...
Click to collapse
Hi Lethargy, Thanks for posting so quickly, unfortunately I can't flash the factory images because when I connect the phone to a PC it doesn't pick up anythings connected because the battery just keeps dropping in and then dropping out every 5 seconds so the computer views it as not connected.
purplechris83 said:
Hi Lethargy, Thanks for posting so quickly, unfortunately I can't flash the factory images because when I connect the phone to a PC it doesn't pick up anythings connected because the battery just keeps dropping in and then dropping out every 5 seconds so the computer views it as not connected.
Click to expand...
Click to collapse
Be more specific please. Does it reboot out of bootloader, every 5 seconds, disconnect from your PC every 5 seconds, or..? Are you sure it isn't a driver issue?
More specific
Lethargy said:
Be more specific please. Does it reboot out of bootloader, every 5 seconds, disconnect from your PC every 5 seconds, or..? Are you sure it isn't a driver issue?
Click to expand...
Click to collapse
When I get to bootloader I can select an option, it doesn't reboot out of bootloader every 5 seconds, the bootloader screen is absolutely fine once I get to it, when I click at option from the bootloader screen that's when it doesn't complete that action a message saying "Google" appears (the loading screen) and then the phone turns off.
I need to have the phone plugged in to get to bootloader, if I try without the power cable nothing happens.
Whether it is attached to a PC or a power outlet the same thing happens: battery icon comes up for 5 seconds, then it disappears for 5 seconds, then it comes on for 5 seconds, disappears for 5 seconds.
Any more info needed? Thanks in advance.
purplechris83 said:
When I get to bootloader I can select an option, it doesn't reboot out of bootloader every 5 seconds, the bootloader screen is absolutely fine once I get to it, when I click at option from the bootloader screen that's when it doesn't complete that action a message saying "Google" appears (the loading screen) and then the phone turns off.
I need to have the phone plugged in to get to bootloader, if I try without the power cable nothing happens.
Whether it is attached to a PC or a power outlet the same thing happens: battery icon comes up for 5 seconds, then it disappears for 5 seconds, then it comes on for 5 seconds, disappears for 5 seconds.
Any more info needed? Thanks in advance.
Click to expand...
Click to collapse
You said:
"the bootloader screen is absolutely fine once I get to it"
"I need to have the phone plugged in to get to bootloader, if I try without the power cable nothing happens."
"Whether it is attached to a PC or a power outlet the same thing happens"
I'm not sure what you mean since those statements are a little conflicting.
Doesn't boot into bootloader when plugged into a PC?
Only boots into bootloader when plugged into AC?
If you boot into the bootloader just fine, then flash the factory images with fastboot? http://forum.xda-developers.com/google-nexus-5/general/tutorial-how-to-flash-factory-image-t2513701
purplechris83 said:
When I get to bootloader I can select an option, it doesn't reboot out of bootloader every 5 seconds, the bootloader screen is absolutely fine once I get to it, when I click at option from the bootloader screen that's when it doesn't complete that action a message saying "Google" appears (the loading screen) and then the phone turns off.
I need to have the phone plugged in to get to bootloader, if I try without the power cable nothing happens.
Whether it is attached to a PC or a power outlet the same thing happens: battery icon comes up for 5 seconds, then it disappears for 5 seconds, then it comes on for 5 seconds, disappears for 5 seconds.
Any more info needed? Thanks in advance.
Click to expand...
Click to collapse
Lets check your battery level to make sure it is not gone bad or got deplated. Make sure your phone is off. Hold down volume_up key while you connect the phone to the pc. You should see the download mode screen after that you should see a next screen with the text "firmware update". Underneath that text in a textbox with white border you should see 3 characters. A "B" letter and 2 numeral. "B" means battery the two numeral means the battery level.
For example you see: B23 it means battery level is at 23%
Report me your battery level.
To restart your phone just hold down the power key for 10-15 secs
Thanks
bitdomo said:
Lets check your battery level to make sure it is not gone bad or got deplated. Make sure your phone is off. Hold down volume_up key while you connect the phone to the pc. You should see the download mode screen after that you should see a next screen with the text "firmware update". Underneath that text in a textbox with white border you should see 3 characters. A "B" letter and 2 numeral. "B" means battery the two numeral means the battery level.
For example you see: B23 it means battery level is at 23%
Report me your battery level.
To restart your phone just hold down the power key for 10-15 secs
Click to expand...
Click to collapse
Hi Bitdomo, when I do as you ask I can't enter download mode because it has a connection to my PC for 5 seconds and then turns off, then has a connection and then turns off.
If you go to you tube .com and then follow it with watch?v=ad7KDWp2y-8 you'll see the exact issue I'm having when connecting to a PC or on my computer (I can't paste links as I'm a new user so forgive me.) Thank you for looking into this.
Thanks
Lethargy said:
You said:
"the bootloader screen is absolutely fine once I get to it"
"I need to have the phone plugged in to get to bootloader, if I try without the power cable nothing happens."
"Whether it is attached to a PC or a power outlet the same thing happens"
I'm not sure what you mean since those statements are a little conflicting.
Doesn't boot into bootloader when plugged into a PC?
Only boots into bootloader when plugged into AC?
If you boot into the bootloader just fine, then flash the factory images with fastboot? http://forum.xda-developers.com/google-nexus-5/general/tutorial-how-to-flash-factory-image-t2513701
Click to expand...
Click to collapse
Doesn't boot into bootloader when plugged into a PC? It boots into bootloader when plugged into a PC
Only boots into bootloader when plugged into AC? It boots into bootloader when plugged into AC
If you boot into the bootloader just fine, then flash the factory images with fastboot? When I select any option from the Bootloader screen it then comes up with the Google logo and then turns off (whether plugged in to PC or AC)
purplechris83 said:
Doesn't boot into bootloader when plugged into a PC? It boots into bootloader when plugged into a PC
Only boots into bootloader when plugged into AC? It boots into bootloader when plugged into AC
If you boot into the bootloader just fine, then flash the factory images with fastboot? When I select any option from the Bootloader screen it then comes up with the Google logo and then turns off (whether plugged in to PC or AC)
Click to expand...
Click to collapse
You don't need to select any option to flash the factory images with fastboot, you just need to be in the bootloader. Read the thread I linked.
SOLVED
Hey all, just wanted to say to everyone thats posted in this forum so far THANK YOU for your help. For the people that have found this forum and are having the same problem with their Nexus 5 you need to replace the battery and everything will work fine so it was a hardware issue this one.
As soon as I replaced the battery I could access Recovery and just reset the device with no problems.
purplechris83 said:
Hey all, just wanted to say to everyone thats posted in this forum so far THANK YOU for your help. For the people that have found this forum and are having the same problem with their Nexus 5 you need to replace the battery and everything will work fine so it was a hardware issue this one.
As soon as I replaced the battery I could access Recovery and just reset the device with no problems.
Click to expand...
Click to collapse
i replaced the battery still shows the same problem the battery symbol keeps blinking and it dosent switch on.
someone plz help
It it possible the replacement battery is defective? Possible motherboard problem?
Well, I've never hard bricked any android (so far), but i think that this is it.
I tried some swap script in init.d folder on my vengeance kernel, but after reboot (or what should be reboot) my xperia tipo didn't boot at all. Hell, it didn't even try lol
So, I tried everything: removing and inserting battery, power and vol+ pressed for reset, fastboot and flash mode on pc with vol+/vol- pressed and connecting USB, but no feedback at all- no vibration, no green or blue led, no ˝device conneced˝ in flashtool log, not even red led when charging with wall charger!
Only thing that still gives me hope is 3 red led flashing when holding power button, indicating very low power level, I suppose. This is the one and only feedback and sign of life from my phone and it's not showing when pressed power button while connected on wall charger or USB.
I have this phone on wall charger for last 3+ days, with no changes in described condition and behaviour, it had 'round 20% battery when gone brick.
I've read tens of threads involving xperia bricks, but they mostly involve removing cable connnecting motherboard and battery in order for chips to lose power and reset as condition for flashtool and stuff, BUT i figure it's for phones which battery can't be pulled out easily- which is not the case with my tipo st 21i
So, guys, PLEASE help me revive my beloved phone, if it is possible.
Be saluted, and help meee
Also, it had:
-gimlo rom v2.1
-vengeance kernel latest version for tipo-tapioca
-and, of course, unlocked bootloader
-----------
Update
-----------
I decided to try decharging battery completely. I did rubber band trick on bower button untill red led flashing 3 times then pause 1 sec stopped completely. Then I set flashtool for only kernel flashing - excluded everything but kernel - did rubber band trick on Vol- this time and connected with USB. Red led started flashing 1 time every 3 seconds for roughly 10 minutes, with no results. After that flashing stopped again, just like on wall charger. When removing USB and holding power button I can see 3 red flashes consecutively, then 1 sec pause and so on.
My hope is dying slowly, if there is anybody with any idea, please help me.
Be saluted all
93Obi said:
Well, I've never hard bricked any android (so far), but i think that this is it.
I tried some swap script in init.d folder on my vengeance kernel, but after reboot (or what should be reboot) my xperia tipo didn't boot at all. Hell, it didn't even try lol
So, I tried everything: removing and inserting battery, power and vol+ pressed for reset, fastboot and flash mode on pc with vol+/vol- pressed and connecting USB, but no feedback at all- no vibration, no green or blue led, no ˝device conneced˝ in flashtool log, not even red led when charging with wall charger!
Only thing that still gives me hope is 3 red led flashing when holding power button, indicating very low power level, I suppose. This is the one and only feedback and sign of life from my phone and it's not showing when pressed power button while connected on wall charger or USB.
I have this phone on wall charger for last 3+ days, with no changes in described condition and behaviour, it had 'round 20% battery when gone brick.
I've read tens of threads involving xperia bricks, but they mostly involve removing cable connnecting motherboard and battery in order for chips to lose power and reset as condition for flashtool and stuff, BUT i figure it's for phones which battery can't be pulled out easily- which is not the case with my tipo st 21i
So, guys, PLEASE help me revive my beloved phone, if it is possible.
Be saluted, and help meee
Also, it had:
-gimlo rom v2.1
-vengeance kernel latest version for tipo-tapioca
-and, of course, unlocked bootloader
Click to expand...
Click to collapse
the battery is just low. leave it on charge for at least 1 hour then turn it on. but first flash a compatible kernel and ftf
Ambychy said:
the battery is just low. leave it on charge for at least 1 hour then turn it on. but first flash a compatible kernel and ftf
Click to expand...
Click to collapse
Thanks for reply, but as I said in first post I had this phone on charger for 3+ days, and nothing!
Battery had roughly 20% when phone went brick...
93Obi said:
Thanks for reply, but as I said in first post I had this phone on charger for 3+ days, and nothing!
Battery had roughly 20% when phone went brick...
Click to expand...
Click to collapse
If u have an incompatible kernel, the phone won t charge. Flash your ftf with flashtool. then leave on charge.
Ambychy said:
If u have an incompatible kernel, the phone won t charge. Flash your ftf with flashtool. then leave on charge.
Click to expand...
Click to collapse
I would only if I could, but, as I said before, phone won't get into flashmode, nor fastboot. Please, read my previous posts
Tipo's lights indicate fastboot and flashboot but doesn't work
My case is also similar, i managed to flash one rom from my sdcard, which it asked for reboot, when i rebooted the phone , its not even going in CWM, even the sony logo is not appearing.
but when i connect phone in fastboot mode (Vol- button + power button and connect to pc), it green light can be seen. but the issue is, my phone does not detect on pc, even though i as sony pc companion. The same i tried by downloading pda.net drivers but nothing worked.
Please help...!!
sachin_28 said:
My case is also similar, i managed to flash one rom from my sdcard, which it asked for reboot, when i rebooted the phone , its not even going in CWM, even the sony logo is not appearing.
but when i connect phone in fastboot mode (Vol- button + power button and connect to pc), it green light can be seen. but the issue is, my phone does not detect on pc, even though i as sony pc companion. The same i tried by downloading pda.net drivers but nothing worked.
Please help...!!
Click to expand...
Click to collapse
And you tried with flashtool on your pc?
And if you have flashtool on pc and flashmode and fastboot drivers installed, and you connect your phone to pc while flashtool is ready for flashing stock rom, open device manager and see if there is any unrecognized driver. Then tell me. Also tell me if you have by accident windows 8 on your pc
93Obi said:
Well, I've never hard bricked any android (so far), but i think that this is it.
I tried some swap script in init.d folder on my vengeance kernel, but after reboot (or what should be reboot) my xperia tipo didn't boot at all. Hell, it didn't even try lol
So, I tried everything: removing and inserting battery, power and vol+ pressed for reset, fastboot and flash mode on pc with vol+/vol- pressed and connecting USB, but no feedback at all- no vibration, no green or blue led, no ˝device conneced˝ in flashtool log, not even red led when charging with wall charger!
Only thing that still gives me hope is 3 red led flashing when holding power button, indicating very low power level, I suppose. This is the one and only feedback and sign of life from my phone and it's not showing when pressed power button while connected on wall charger or USB.
I have this phone on wall charger for last 3+ days, with no changes in described condition and behaviour, it had 'round 20% battery when gone brick.
I've read tens of threads involving xperia bricks, but they mostly involve removing cable connnecting motherboard and battery in order for chips to lose power and reset as condition for flashtool and stuff, BUT i figure it's for phones which battery can't be pulled out easily- which is not the case with my tipo st 21i
So, guys, PLEASE help me revive my beloved phone, if it is possible.
Be saluted, and help meee
Also, it had:
-gimlo rom v2.1
-vengeance kernel latest version for tipo-tapioca
-and, of course, unlocked bootloader
-----------
Update
-----------
I decided to try decharging battery completely. I did rubber band trick on bower button untill red led flashing 3 times then pause 1 sec stopped completely. Then I set flashtool for only kernel flashing - excluded everything but kernel - did rubber band trick on Vol- this time and connected with USB. Red led started flashing 1 time every 3 seconds for roughly 10 minutes, with no results. After that flashing stopped again, just like on wall charger. When removing USB and holding power button I can see 3 red flashes consecutively, then 1 sec pause and so on.
My hope is dying slowly, if there is anybody with any idea, please help me.
Be saluted all
Click to expand...
Click to collapse
I"ve got thesame problem like you bro last time after using a vengeance kernel latest version in my tipo,thesame problem like you told the only way that i can fix my phone that time is to install a ADB driver to my pc because when im using a flashtool it didnt recognize my phone in flash mode and fastboot mode but after installing a adb driver in my pc and im using the flashtool it recognize my phone but it takes time to recognize it for the first time so be patience and after that i flash my firmware and now my phone is working but i never try again to use a vengeance kernel to my phone
Alright so i woke this morning and my moto G is not charging with either the ac adpater or the computer. My phone is not rooted it is currently dead. The only way that my computer recognizes the phone is when i put it on bootloader that is the only time it recognizes it as a device does anyone know why this has ahppened and is there anything i can do.
Always check the Frequently Asked Questions first!
Q28: Moto G will not power up (addition to Q16 and Q25)
Plug it into the charger
Hold the VOL DOWN key
While still holding the VOL DOWN key, press and hold the POWER key
Hold both keys down for over 120 seconds. This is more than two minutes and will seem like a long time. You might want to time yourself to make sure you hold it longer than two minutes.
After holding the keys down for more than two minutes, release them.
The Flash Boot screen will display, and the Normal Reboot option will be highlighted
Press the VOL UP key and the device will start a normal reboot.
If you have tried the above and it didn't work, try this:
Plug in the phone for 15 minutes.
Proceed to Step 2 above.
Source: https://forums.motorola.com/posts/3d5eadc25d
Thank you for your reply however my phone is totally dead from battery so everytime i go to the flash boot and click normal boot it just gives me the three blinking lights that means it has no more battery. SInce my phone cannot charge I dont know how to fix this issue i was wondering if anyone else had this problem. When i plug my phone into my computer I keep getting unknown device attached to usb and nothing happens. However, When i boot into flash boot that is the only time that my computer can recognize my device however it still does not charge since charging does not work while in flashboot mode.
disconnect your phone from the charger or pc, leave it alone for aprox. 15 minutes then connect it to the pc and wait for it to start charging (this may take around 5 - 15 min.)
i had my phone not taking a charge from either the charger nor the pc and found those instrucctions on a post and that made it come back alive
why did you post two threads on two different sub fourms?
http://forum.xda-developers.com/moto-g-2014/help/moto-g-charging-t2904775
sorry i forgot that they came out with a new moto g this year so i accidentally put it in the wrong thread and ^^ i tried that it didnt work it does nothing no charge or anything everytime i connect to my computer it says "usb device not recognized" the only time it is recognized is when it is in fast boot does anyone have a solution to this besides me buying a new phone?
My device is D6603, already rooted in kitkat using giefroot, locked bootloader, "Z3-lockeddualrecovery2.8.15" installed.
I flashed the " D6603_23.1.A.1.28_Customized_NCB" firmware as "[D66XX]{5.0.2} Flashable stock Lollipop pre-rooted collection & XZ dualrecovery" post instruct, after that, the device restart, and I enjoyed lollipop for just a few minutes, after I open the Setting, the device first become no response, then screen is off, led off(even plug into adapter), no response no matter how hard i tried to press the power button, with vol+/- pressed together, no response at all!!
After one night leave it alone, i tried again, no response at all ,however, when i plugged into adapter, the led light became red, then after a while, it began to blink in red.
Please help me, what should i do with this condition?
mythomasy said:
My device is D6603, already rooted in kitkat using giefroot, locked bootloader, "Z3-lockeddualrecovery2.8.15" installed.
I flashed the " D6603_23.1.A.1.28_Customized_NCB" firmware as "[D66XX]{5.0.2} Flashable stock Lollipop pre-rooted collection & XZ dualrecovery" post instruct, after that, the device restart, and I enjoyed lollipop for just a few minutes, after I open the Setting, the device first become no response, then screen is off, led off(even plug into adapter), no response no matter how hard i tried to press the power button, with vol+/- pressed together, no response at all!!
After one night leave it alone, i tried again, no response at all ,however, when i plugged into adapter, the led light became red, then after a while, it began to blink in red.
Please help me, what should i do with this condition?
Click to expand...
Click to collapse
You should reinstall your firmware using Sony PC companion. Download it and it will give you instructions how to repair your phone. Make sure you have all the necessary drivers installed. this is official and simple method to repair your phone
Secondly , you can alternatively use FLASHTOOL.
If you still have questions, quote for a reply
Hnk1 said:
You should reinstall your firmware using Sony PC companion. Download it and it will give you instructions how to repair your phone. Make sure you have all the necessary drivers installed. this is official and simple method to repair your phone
Secondly , you can alternatively use FLASHTOOL.
If you still have questions, quote for a reply
Click to expand...
Click to collapse
my phone is still bricked. when using flashtool in flashmode, connected to the PC, it repeats the following message:
INFO - For 2011 devices line, be sure you are not in MTP mode
INFO - Device disconnected
Device connected with USB debugging off
For 2011 devices line, be sure you are not in MTP mode
INFO - Device disconnected
and the led light is red on, then off, then on ....
if i try to connect it to the power adapter, the led light is red with fast blink. And I try to use another power adapter (iphone's ), the red light is on, continuously for about 20 minutes, then off, at this time ,if i try to reconnect to the power adapter, the led is still off. after try power button or vol+ button, then the led is back again , but with the same status.
is there anything I can do with my z3? I'm desperate...
thanks a lot !!
mythomasy said:
my phone is still bricked. when using flashtool in flashmode, connected to the PC, it repeats the following message:
INFO - For 2011 devices line, be sure you are not in MTP mode
INFO - Device disconnected
Device connected with USB debugging off
For 2011 devices line, be sure you are not in MTP mode
INFO - Device disconnected
and the led light is red on, then off, then on ....
if i try to connect it to the power adapter, the led light is red with fast blink. And I try to use another power adapter (iphone's ), the red light is on, continuously for about 20 minutes, then off, at this time ,if i try to reconnect to the power adapter, the led is still off. after try power button or vol+ button, then the led is back again , but with the same status.
is there anything I can do with my z3? I'm desperate...
thanks a lot !!
Click to expand...
Click to collapse
did you hold the Vol+ button when inserting the microusb? Also, the device must be completely off (power+vol+)
mythomasy said:
my phone is still bricked. when using flashtool in flashmode, connected to the PC, it repeats the following message:
thanks a lot !!
Click to expand...
Click to collapse
turn off your device.
Hold power+volume up button and then connect your device via a USB. If however, the device disconnects, you should keep holding the power button and do not leave it.
Lastly, upgrade your drivers from flashtool folder!
Good Luck
Incanity said:
did you hold the Vol+ button when inserting the microusb? Also, the device must be completely off (power+vol+)
Click to expand...
Click to collapse
you mean inserting the microusb connected with power adapter using vol+button? I tried ,but the led light still fast blinking in red.
I thought maybe the fast blinking means the phone cannot charge in.
Hnk1 said:
turn off your device.
Hold power+volume up button and then connect your device via a USB. If however, the device disconnects, you should keep holding the power button and do not leave it.
Lastly, upgrade your drivers from flashtool folder!
Good Luck
Click to expand...
Click to collapse
i hold the power button and vol+ button with rubber bang, connect to power adapter, however, no led light on!
mythomasy said:
i hold the power button and vol+ button with rubber bang, connect to power adapter, however, no led light on!
Click to expand...
Click to collapse
Do this , Make sure you load all the files in flashtool and it is waiting for the device.
When it is waiting to flash, hold down power+volume key and connect it. Connecting before means, you will have to hold it for a long time
If it doesnot work, your drivers are outdated which as i suggested upgrade from flashtool folder
mythomasy said:
i hold the power button and vol+ button with rubber bang, connect to power adapter, however, no led light on!
Click to expand...
Click to collapse
no;
when NOT connected: press power + vol+. After that you get two vibrations from the device, this means the device is off.
after that, hold ONLY vol+, and connect it to your PC, with Flashtool waiting for the device using flashmode.
the device will never vibrate, no response at all!
I went to customer service yesterday, they said my device is completely no response to any test and need to change the mainboard....how could a basically flash(just flash 5.0.1 with bootloader never unlocked) will result in such a disaster?! I cannot understand!!
I was in fastboot mode ready to unlock my bootloader, the phone got the led in a blue color when suddenly the led turned off.
I dont know what happenden but the phone looks dead.
The screen its black and the led its off, i got no reaction to anything except when i connect the phone to my pc, the pc tells me its an unkown device. help please.
I allready tryied the volume up and power button and also i tryied to get again in fastboot mode but it doesnt work.
Chacho3993 said:
I was in fastboot mode ready to unlock my bootloader, the phone got the led in a blue color when suddenly the led turned off.
I dont know what happenden but the phone looks dead.
The screen its black and the led its off, i got no reaction to anything except when i connect the phone to my pc, the pc tells me its an unkown device. help please.
I allready tryied the volume up and power button and also i tryied to get again in fastboot mode but it doesnt work.
Click to expand...
Click to collapse
try to put it on charge by plug in to a normal electric socket and check the device reaction.
If you get positive reaction which means LED ON , or battery recharge etc then you are good to go in to the next level which means...
Plug your device in to your PC/laptop. If it gets again with "not recognizing" try different USB port.
If all the ports showing you the same problem, try to find another cable. If you get again the same problem try to find another PC to test if there is recognizable.
these are the first steps you should so before i suggest you anything else. We have to make sure that your device is in a working state.