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Phone won't boot

Hey guys,
My phone shut off unexpectedly today and now won't turn back on. When I try to power it on I see the Google logo for a couple seconds and then it'll just shut off again. I tried holding the volume up/down buttons to access the bootloader, but right after I get to the screen it just restarts itself again.
Connecting to power (AC or USB) causes it to constantly reboot over and over, it just shows the Google logo for a couple seconds and then restarts again.
Any ideas on what I can do?

rosscarrothers said:
Hey guys,
My phone shut off unexpectedly today and now won't turn back on. When I try to power it on I see the Google logo for a couple seconds and then it'll just shut off again. I tried holding the volume up/down buttons to access the bootloader, but right after I get to the screen it just restarts itself again.
Connecting to power (AC or USB) causes it to constantly reboot over and over, it just shows the Google logo for a couple seconds and then restarts again.
Any ideas on what I can do?
Click to expand...
Click to collapse
Provide more information for a starter - stock? unlocked bootloader? rooted? third party recovery? rom and if yes which?
If it's stock I'd RMA it.
If not what did you do immediately before the problem started?
try holding the power button for > 2 seconds which should turn it off completely, leave it on a wall charger for at least a couple of hours then turn it back on - I doubt it'll fix the problem but it's a simple thing to try...

Clancy_s said:
Provide more information for a starter - stock? unlocked bootloader? rooted? third party recovery? rom and if yes which?
If it's stock I'd RMA it.
If not what did you do immediately before the problem started?
try holding the power button for > 2 seconds which should turn it off completely, leave it on a wall charger for at least a couple of hours then turn it back on - I doubt it'll fix the problem but it's a simple thing to try...
Click to expand...
Click to collapse
Everything on it is stock, no ROM, not rooted. I had just taken it out of my pocket to check the time, put it back in my pocket and then felt it vibrate, took it back out to see it at the Google logo and haven't been able to get it started since. There was one or two times when it got past the Google logo and started to show the start up animation (the four colours bouncing around or whatever it is) but then it shut off again.
I tried holding the power button to completely turn it off, but plugging it into the wall charger just causes it to repeatedly attempt to boot like I mentioned earlier. I'll leave it for a while and hope for the best

Sounds like the mobo is bad. Most likely will have to rma it.

rosscarrothers said:
Hey guys,
My phone shut off unexpectedly today and now won't turn back on. When I try to power it on I see the Google logo for a couple seconds and then it'll just shut off again. I tried holding the volume up/down buttons to access the bootloader, but right after I get to the screen it just restarts itself again.
Connecting to power (AC or USB) causes it to constantly reboot over and over, it just shows the Google logo for a couple seconds and then restarts again.
Any ideas on what I can do?
Click to expand...
Click to collapse
Do you have a case on? The case could be faulty.
Sent from my Nexus 5 using Tapatalk

jd1639 said:
Sounds like the mobo is bad. Most likely will have to rma it.
Click to expand...
Click to collapse
Maybe not. Sounds like a stuck power button to me.
OP does the phone just endlessly repeat this cycle? If so it's rebooting itself do to a stuck power button. One other users already reported similar issues and his power button was indeed stuck. Mash the power button hard for a minute to see if you can unstick it.

theesotericone said:
Maybe not. Sounds like a stuck power button to me.
OP does the phone just endlessly repeat this cycle? If so it's rebooting itself do to a stuck power button. One other users already reported similar issues and his power button was indeed stuck. Mash the power button hard for a minute to see if you can unstick it.
Click to expand...
Click to collapse
You got it!
Thanks so much, really wasn't looking forward to waiting for weeks while the RMA went through. The button didn't appear to be stuck - it was still clicky - but after mashing it for a minute it started up normally and appears to be fine now.

Did you flash any ROMs or anything previously?
Sent from my Nexus 5 using xda app-developers app

scottdouglasdick said:
Did you flash any ROMs or anything previously?
Sent from my Nexus 5 using xda app-developers app
Click to expand...
Click to collapse
brother the issue is gone, as mentioned "sticky power button" was causing it. read the thread before posting. btw thanks for effort anyway... haha
:laugh::silly:

Hi all. Sorry to reopen an old thread (but xda suggested I check here before making my own thread).
I think we have the exact same problem with a Nexus 5. Unfortunately, bashing the power button doesn't seem to be helping (and makes me feel slightly silly .
Anyone know how much effort it would be to take it apart to get to the part that's stuck? Any good instructions?
Thanks.

Weird, I have the same issue starting a few hours ago. I updated to the Oct 17 beta of Cataclysm then a hour later it happened. But was told it sounds like the power button issue.
Took it apart, tried to fix it. If plugged in I can get into the bootloader, but then it reboots again. I've tried tapping it on a hard surface, and it gets seems like it almost fixes it because it'll connect to my laptop but then reboots again.
Could it be the battery? It was fully charged but then died as I was deleting hundreds of photo's in Dropbox to move photo's over from my phone because it was full.

I too am running into this same issue. My screen cracked so I replaced the digitizer with some success. In the process I damaged the battery and needed to replace it. When I got the new battery and replaced it my phone is now unusable.
When unplugged: I turn on the phone and it's running the ANDROID animation then turns off.
When plugged in: I turn on the phone, the ANDROID animation runs then the phone restarts and continues the process over and over again.
I then flashed the phone with Marshmallow and the same thing happens. Except now that I flashed it I get the Android icon with the spinning gear. So; I flashed it back to 5.1.1, but the same result.
Could I have physically damaged something inside or is it a battery issue? Thanks for any insight.

[Q] AT&T HTC ONE X Stuck in Boot Loop and showing

Hi Developers
I am new to this forum. I have tried to Update my Phone using team won recovery. After installing the Rom the Mobile is went in the Bootloop and cannot go to Bootloader and Recovery and also when I try using CMD or any other method from PC. The phone is not detected and it shows Device not found.
Can anybody help me recover?

You can read through this "roll up" to find all you will need to know/understand about your device.
I might suggest to start with the FAQ. You will also find a tool that will help you root your device, in the "roll up"

As soon as the phone starts to boot, hold volume down and power together, when the screen goes blank let go of power but keep holding volume down. This should get you to the bootloader, please post your bootloader details.
Sent from my Evita.

Similar issue, but boot loop won't stop
timmaaa said:
As soon as the phone starts to boot, hold volume down and power together, when the screen goes blank let go of power but keep holding volume down. This should get you to the bootloader, please post your bootloader details.
Sent from my Evita.
Click to expand...
Click to collapse
Hey Timmaa, it seems like I have the same problem as the original poster. I know a lot has been said about this topic but none seem to be as bad as mine. In my case, the boot loop won't stop even if I press the down volume and power button together. The bootloader just starts up, but then the phone reboots again (and again). In short, it won't stop long enough for me to do anything at all. Same issue when I connect to the laptop; it reboots before my computer even starts to detect it. Do you figure it is essentially bricked?
Just to let you know: this phone is tied to Singtel (Singapore telcom provider) and this issue only happened when I tried to do a factory reset (I got a new phone and was going to give this one to a friend). I may have screwed up in that I didn't let the phone charge before I tried the factory reset (it was only 5%). A couple of times, the phone did start up normally and it even entered the new phone set up utility. However, it went back to the boot loop within a few seconds and now won't even start up at all. Please help?

Does the phone power on at all now? You say in the beginning that it's looping but you say at the end that it won't start up at all, seems like a contradiction.
Sent from my Evita

androidnoob116 said:
Do you figure it is essentially bricked?
Click to expand...
Click to collapse
There is no such thing as "essentially bricked". Its either bricked, or its not. And on this device, if the screen still comes on, its not bricked.
Also, you got into this situation in a different way then the OP, so its not the same problem. Tagging onto someone else's post and saying you "have the same problem" when you in fact don't, is confusing.
As timmaaa asked, are you in a bootloop, or is the phone powered down now?

redpoint73 said:
There is no such thing as "essentially bricked". Its either bricked, or its not. And on this device, if the screen still comes on, its not bricked.
Also, you got into this situation in a different way then the OP, so its not the same problem. Tagging onto someone else's post and saying you "have the same problem" when you in fact don't, is confusing.
As timmaaa asked, are you in a bootloop, or is the phone powered down now?
Click to expand...
Click to collapse
Hey guys,
Thanks for your replies. Sorry if that was ambiguous; I'm still learning my way around here.
To answer both your questions, the phone is in a bootloop. It starts up, shows the HTC logo and then repeats. What I meant by "won't start up" is that now it doesn't go beyond the HTC logo, even though it started up completely on a couple of occasions (got to the home screen) but started rebooting again after a few seconds. It just won't stop rebooting, as long as it has enough charge to.
Another thing I discovered is that the bootloader starts up even if I only press the volume down button (it reboots again after a second), so it seems like the power button is stuck pressed down. Do you think that explains it, and what can I do from here on? Thanks for your help.
Cheers.

If the phone is rebooting even while in the bootloader then the power button being stuck could be the cause. I've never heard of one of these rebooting even from the bootloader so that's actually all I can think of. I guess the only way to confirm/fix this would be to open the device up.
Sent from my Evita

timmaaa said:
If the phone is rebooting even while in the bootloader then the power button being stuck could be the cause. I've never heard of one of these rebooting even from the bootloader so that's actually all I can think of. I guess the only way to confirm/fix this would be to open the device up.
Click to expand...
Click to collapse
Yeah, it could be a power button malfunction; or battery or other power fault, or other hardware failure. In any case I agree that randomly rebooting even in bootloader doesn't look good.
Have you tried fiddling with the power button to see if you can get it "unstuck"? Although the issue may be with the switch under the plastic button.

[Q] RAZR XT890 stuck in Motorola/Intel logo

Hello guys.
About an hour ago, I tried to access my WiFi configs, and realized it would take me back to the start screen. So I rebooted my phone. The thing is, it is now stuck in the big red Motorola/Intel logo, and keeps looping.
If I try to turn it off by using the Power button, it doesn't work. If I try to reset using Power + Vol Down, it just restarts the loop. I can't get into recovery mode, because it won't turn off.
I really don't know what to do. My phone is still trying to boot for the past hour, and I really need it, asap.
It is running Android 4.1.2. No root. As stock as it gets.
Any advice, guys? Please

alovose said:
Hello guys.
About an hour ago, I tried to access my WiFi configs, and realized it would take me back to the start screen. So I rebooted my phone. The thing is, it is now stuck in the big red Motorola/Intel logo, and keeps looping.
If I try to turn it off by using the Power button, it doesn't work. If I try to reset using Power + Vol Down, it just restarts the loop. I can't get into recovery mode, because it won't turn off.
I really don't know what to do. My phone is still trying to boot for the past hour, and I really need it, asap.
It is running Android 4.1.2. No root. As stock as it gets.
Any advice, guys? Please
Click to expand...
Click to collapse
I have the exact same problem.
My phone (non rooted, stock Android) has been freezing quite a lot for the past 1 or 2 weeks. Sometimes rebooting on its own, sometimes I had to force it. This afternoon it froze again and I had to force reboot, where it started freezing at the Motorola logo. I cant go any further since rebooting just makes it loop that way.
I waited for the battery to deplete so my phone eventually turned off, charged it back at around 60% and tried to go into recovery mode with power+volume up+volume down. Same results. I don't think I could have failed the recovery mode procedure because I had practiced and knew I would only get 1 chance of succeeding.
Anyone has experience with this ?
I will see if Motorola or my retailer will repair/replace it for free under warranty terms, otherwise I will try opening it up for some cleaning and maybe further attempts with control over the battery.

SuperS06 said:
I have the exact same problem.
My phone (non rooted, stock Android) has been freezing quite a lot for the past 1 or 2 weeks. Sometimes rebooting on its own, sometimes I had to force it. This afternoon it froze again and I had to force reboot, where it started freezing at the Motorola logo. I cant go any further since rebooting just makes it loop that way.
I waited for the battery to deplete so my phone eventually turned off, charged it back at around 60% and tried to go into recovery mode with power+volume up+volume down. Same results. I don't think I could have failed the recovery mode procedure because I had practiced and knew I would only get 1 chance of succeeding.
Anyone has experience with this ?
I will see if Motorola or my retailer will repair/replace it for free under warranty terms, otherwise I will try opening it up for some cleaning and maybe further attempts with control over the battery.
Click to expand...
Click to collapse
Well, Motorola did repair my phone for free, but I live in Brazil. It took them 1 day to repair. They say that part of the circuit board was damaged, but I don't know what could be the cause. Maybe overheat? I don't know about your phone, but mine would get up to 50ºC while using Skype.

[Q] Nexus 5 constantlly turning on and off

For quite a long time I did not make any change on Nexus ROM or applications, but yesterday my Nexus turns off while I was web browsing. I tried to turn it on but it refuses. It is only possible with USB cable plugged in, but then it constantly turns on for 1 second and then turns off, and this is going in endless loop as soon as USB cable is plugged in. But with unplugged cable NEXUS can not be powered on.
The video can be seen on this link
https://www.dropbox.com/s/cvyxii4ctm4aqgu/VID_20141110_190522.mp4?dl=0
Yesterday I somehow manage to get in recovery mode and I wipe cache and Nexus boot ROM, but after 30 minutes of usage it again turns of by itself. After that for more than 100 times I tried to get to recovery mode but I could not.
So, I think that my only chance to wipe cache and put new ROM is through ADB. But I do know how to do that. Can anyone help me?
P.S. I both my NEXUS in US, but I live in Croatia (EU) and Google tells that they can not make exchange for other NEXUS (although my phone is under warranty) because they can only do that for postal address inside US. Because I do not live there and any of my friends or relative will travel in US soon my only way to get my NEXUS working is through ADB.

sounds as your power button is "stuck'.

Try the LG RMA. Worked for me here in Belgium

brom25 said:
Try the LG RMA. Worked for me here in Belgium
Click to expand...
Click to collapse
Where did you both your Nexus, and in which country did you send RMA request?

DTFuser said:
For quite a long time I did not make any change on Nexus ROM or applications, but yesterday my Nexus turns off while I was web browsing. I tried to turn it on but it refuses. It is only possible with USB cable plugged in, but then it constantly turns on for 1 second and then turns off, and this is going in endless loop as soon as USB cable is plugged in. But with unplugged cable NEXUS can not be powered on.
The video can be seen on this link
https://www.dropbox.com/s/cvyxii4ctm4aqgu/VID_20141110_190522.mp4?dl=0
Yesterday I somehow manage to get in recovery mode and I wipe cache and Nexus boot ROM, but after 30 minutes of usage it again turns of by itself. After that for more than 100 times I tried to get to recovery mode but I could not.
So, I think that my only chance to wipe cache and put new ROM is through ADB. But I do know how to do that. Can anyone help me?
P.S. I both my NEXUS in US, but I live in Croatia (EU) and Google tells that they can not make exchange for other NEXUS (although my phone is under warranty) because they can only do that for postal address inside US. Because I do not live there and any of my friends or relative will travel in US soon my only way to get my NEXUS working is through ADB.
Click to expand...
Click to collapse
Shake your phone vigorously for a minute, I've been using that as a temp fix for a dodgy power button exactly as you've described

topgeardave said:
Shake your phone vigorously for a minute, I've been using that as a temp fix for a dodgy power button exactly as you've described
Click to expand...
Click to collapse
And what you did after shaking? I try but I did not helped.

DTFuser said:
And what you did after shaking? I try but I did not helped.
Click to expand...
Click to collapse
It usually helps the button back out again, I think you should RMA to LG, I'm sure they're worldwide. You could always open up the phone and try unsticking the power button if you can't be bothered sending it back.

topgeardave said:
It usually helps the button back out again, I think you should RMA to LG, I'm sure they're worldwide. You could always open up the phone and try unsticking the power button if you can't be bothered sending it back.
Click to expand...
Click to collapse
Power button is not what cause the problem. I found many reports about the same problem, like on this page
http://www.reddit.com/r/Nexus5/comments/29tr5n/nexus_5_wont_turn_on_google_screen_keeps_flashing/
but nothing which I tried did not helped. But certainly power button is not causing the problem.
When the problem appears for the first time I manage to get into recovery and wipe cache, and after that phone booted ROM. After 30 minutes of working phone turns off and now I'm not able to get even into recovery.

DTFuser said:
Power button is not what cause the problem. I found many reports about the same problem, like on this page
http://www.reddit.com/r/Nexus5/comments/29tr5n/nexus_5_wont_turn_on_google_screen_keeps_flashing/
but nothing which I tried did not helped. But certainly power button is not causing the problem.
When the problem appears for the first time I manage to get into recovery and wipe cache, and after that phone booted ROM. After 30 minutes ow working phone turns off and now I'm not able to get even into recovery.
Click to expand...
Click to collapse
Ah damn, sorry to hear mate. Go to LG, only solution you have left.

im in the same boat my phone was just working for the past since i had it and now just like 20 minutes ago it just shut off and now doing the constant turning on and off crap
and im rooted with the latest build from pac-man (a clean install), cant even get into the fast boot and recovery to recover to stock since its doing this bootloop thing
any more help would be amazing
Edited - problem fixed it was something up with the power button, got a couple hard wacks and it booted up perfect

meechieballer said:
im in the same boat my phone was just working for the past since i had it and now just like 20 minutes ago it just shut off and now doing the constant turning on and off crap
and im rooted with the latest build from pac-man (a clean install), cant even get into the fast boot and recovery to recover to stock since its doing this bootloop thing
any more help would be amazing
Edited - problem fixed it was something up with the power button, got a couple hard wacks and it booted up perfect
Click to expand...
Click to collapse
So, since shaking, hard wacks, and anyting physical did not helped after your post I dismantle my phone and without back plate and upper plate on chips my phone works perfectly. So it seems that upper plate which covers chips is the cause of the problem.

For me, not even disassembling has helped, so I bought another motherboard and put it into my phone.

Dancsi said:
For me, not even disassembling has helped, so I bought another motherboard and put it into my phone.
Click to expand...
Click to collapse
the problem occured and i found what it was my power button it wasnt staying in place like its tilting so now i got to buy a new button for it :/

As far as I remember, the button is soldered to the board, and can not be bought separately. I know the second thing for sure, since I was also only searching for a separate button in the beginning...

Black screen boot loop

I was trying to root this phone so I unlocked the bootloader.
I went on twrp and selected A9 only to realize after I flashed that there is a difference between the a9 and a9s and now my phone is just not booting and is stuck in a black screen boot loop.
If I connect it to a computer it will connect for just a second then disconnect which makes me believe it is not 100% dead
What happens is that it will vibrate connect to the computer for around a few seconds then it will disconnect and then 10 seconds later vibrate again and repeat.
Model is 2pwd200
I cannot do anything such as get into bootloader or download mode. I even tried adb and fastboot but no connection

I've had a bootloop like that before. For me it worked to power-off with volume button up + power. Then power-on with volume button down + power. I was able to get into download mode that way and flash the right boot.img (in my case...)

eavandijk83 said:
I've had a bootloop like that before. For me it worked to power-off with volume button up + power. Then power-on with volume button down + power. I was able to get into download mode that way and flash the right boot.img (in my case...)
Click to expand...
Click to collapse
Tried it but still the same thing. I even let the battery drain and then plugged it into my computer and same thing

TahirMia said:
Tried it but still the same thing. I even let the battery drain and then plugged it into my computer and same thing
Click to expand...
Click to collapse
How did you fix it in the end?
Did exactly the same thing yesterday and now sitting here with an phone which turns itself on and off all the time..

xeoN6077 said:
How did you fix it in the end?
Did exactly the same thing yesterday and now sitting here with an phone which turns itself on and off all the time..
Click to expand...
Click to collapse
Couldn't fix it.It still has warranty so I am sending it in for a repair tomorrow, hopefully they do it.

TahirMia said:
Tried it but still the same thing. I even let the battery drain and then plugged it into my computer and same thing
Click to expand...
Click to collapse
TahirMia said:
Couldn't fix it.It still has warranty so I am sending it in for a repair tomorrow, hopefully they do it.
Click to expand...
Click to collapse
Doesn't unlocking the bootloader void the warranty?
So if I send mine in, would they charge me any money for it or should i live with the fact that i turned the phone into an expensive vibrator?..
Ty anyway!

xeoN6077 said:
Doesn't unlocking the bootloader void the warranty?
So if I send mine in, would they charge me any money for it or should i live with the fact that i turned the phone into an expensive vibrator?..
Ty anyway!
Click to expand...
Click to collapse
With the live chat person they i told them that it just stopped coming on and it only came on sometimes, I asked them what would void the warranty and they said broken screen or liquid damage. I never told them that the bootloader was unlocked. They did say that if there was physical damage to the device they would charge me £27 for it but there isn't so I am going to ship it tomorrow.

xeoN6077 said:
Doesn't unlocking the bootloader void the warranty?
So if I send mine in, would they charge me any money for it or should i live with the fact that i turned the phone into an expensive vibrator?..
Ty anyway!
Click to expand...
Click to collapse
I managed to find a way. Every time I plugged the phone into the power adapter, the phone only vibrated every 23 seconds. I decided to leave it for a few days to complete exhaustion and after connecting the power supply for about 2 minutes blinking orange LED. After 3 minutes the phone normally switched on. However, when I tried to restore the factory settings again, I had a black screen. I left the phone again for two days and this time I prepared a SD card with the image from the link:
https://drive.google.com/file/d/0B0r...g5UkZucWc/view
I changed the file name to 2PWDIMG.zip
I started it with the VOL- key and loaded the image. After flash everything works fine.
PS.
Every time the first time I started the phone, the touch screen did not work, I had to restart my phone and then the touch was working. After flash image everything is ok.
This may help you.
Regards
looqpl
Click to expand...
Click to collapse
You may want to try this, I will if the warranty thing doesn't work out. Credit @looqpl

So they sent the phone back and it is in fully working condition, they relocked the bootloader for me as well and they seemed to have also replaced the frame which had some scratches on it.