Phone won't boot - Nexus 5 Q&A, Help & Troubleshooting

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.

Related

[Q] GS4G keeps reseting every 3 seconds

Hello.
I have searched the forums about my issue, and although there are a lot of threads about phones rebooting, there was none about such exact problem as I am experiencing. I apologize if I missed a thread which tackled this problem.
Symptoms:
1. my galaxy S 4G reboots about every 3 seconds: it only gets to the very first "Samsung Galaxy S 4G T-mobile" logo, and reboot
2. it is possible to access boot menu (volume up+down), but only for a split second, and phone reboots again
3. rebooting starts as soon as in put battery in, no need to even press the power button
All that started by itself yesterday. I thought it was a mechanical fault with power switch, I opened the phone, unscrewed covers, cleaned everything, but found no mechanical issue. I switched batteries, tried starting the phone of plugged-in charger, on usb cable, took out sd card, sim card, put a different sim card in... and nothing helped.
Phone runs on Gingerbread 2.3, stock by T-mobile, never had any other roms on it. Device is rooted.
If anyone has an idea how to approach this issue, please let me know. Or reply with a link to somewhere I can read more. I was not able to find much on this...
Thank you!
Malarz
The phone sometimes does a reboot loop if u take the battery out of the phone without turning the power off. Just keep trying to turn it on, and eventually it would reboot properly. Take the battery out of the phone for a few minutes, put it back and try to turn it on again. Do this a few times to see if it boot back properly.
Hit the thanks button if it helps. It's my motivator to be more helpful.
gizmoscoop said:
The phone sometimes does a reboot loop if u take the battery out of the phone without turning the power off. Just keep trying to turn it on, and eventually it would reboot properly. Take the battery out of the phone for a few minutes, put it back and try to turn it on again. Do this a few times to see if it boot back properly.
Hit the thanks button if it helps. It's my motivator to be more helpful.
Click to expand...
Click to collapse
Thank you for a prompt reply!
I did take out battery for a long time, well over one hour, and took out sim card and sd card as well. Unfortunately reboot loop started immediately when I placed battery back in the phone. That's what made me think it was a mechanical issue with power button.
I will try keeping battery out a few times again today.
One other thing: the phone had been in hot and humid environment for about 30 minutes before this happened. Not the first time for this phone to experience high humidity, though. However, I did not find any moisture inside the unit.
Malarz
I had this happened to my phone. Just wait it out and keep trying to reboot, it will come around. Take the battery out and put it back on. Keep on repeating this step.
Also, when the phone is on, try to hold the volume - + and power button at the same time to see if u can get into boot mode.
Also u can use hair blow dryer to blow dry area around the power button.
Hit the thanks button if it helps. It's my motivator to be more helpful.
Or, batt is dead...
You have a stuck power button. Take apart the phone and clean the power bottom with compressed air. Then rapidly push the button in and out for a while.
Resolution:
I took the phone apart, and checked the power button (which had been my first guess), and was seemingly all right.
The battery was also not the issue, as I tried 3 different batteries.
Having no other choice, I put the battery back in, and let the phone happily reboot at its own leisure. After over 20 reboots, the system came on. Then a few minutes later the device rebooted again, and the loop started all over. After a while it booted up again. This time I did not wait for the device to reboot by itself, and I switched the phone off with power button, and then turned back on, and it booted normally. Repeated this once more - normal boot again. One more power off, and I entered the boot menu and did factory reset. Once the stock reinstalled, everything would work perfectly - no more issues with boot loop.
So it seems to me as a software problem more than anything else.
Side note: for the last several weeks the phone displayed strange behavior, that is the screen would light up for no reason by itself, and quickly go off. Sometimes it happened once every few minutes, sometimes it happened several times a minute. Did it have anything to do with the boot loop? No idea. But it strengthens my hunch about a software issue, as that behavior also went away after factory reset.
Sorry for the lengthy post, but since I have not found a similar case anywhere in the forums, I though someone might find this interesting. I do not deal with phones except as a user, but some of you guys do it maybe professionally, so maybe this will be a curious puzzle for you to solve.
Malarz
It sounds like Gremlins....
Sent from my Amazon Kindle Fire using xda app-developers app
Do you have notifications set up? It could notify that u have incoming messages such as a text or an email.
Hit the thanks button if it helps. It's my motivator to be more helpful.
Malarz said:
Resolution:
I took the phone apart, and checked the power button (which had been my first guess), and was seemingly all right.
The battery was also not the issue, as I tried 3 different batteries.
Having no other choice, I put the battery back in, and let the phone happily reboot at its own leisure. After over 20 reboots, the system came on. Then a few minutes later the device rebooted again, and the loop started all over. After a while it booted up again. This time I did not wait for the device to reboot by itself, and I switched the phone off with power button, and then turned back on, and it booted normally. Repeated this once more - normal boot again. One more power off, and I entered the boot menu and did factory reset. Once the stock reinstalled, everything would work perfectly - no more issues with boot loop.
So it seems to me as a software problem more than anything else.
Side note: for the last several weeks the phone displayed strange behavior, that is the screen would light up for no reason by itself, and quickly go off. Sometimes it happened once every few minutes, sometimes it happened several times a minute. Did it have anything to do with the boot loop? No idea. But it strengthens my hunch about a software issue, as that behavior also went away after factory reset.
Sorry for the lengthy post, but since I have not found a similar case anywhere in the forums, I though someone might find this interesting. I do not deal with phones except as a user, but some of you guys do it maybe professionally, so maybe this will be a curious puzzle for you to solve.
Malarz
Click to expand...
Click to collapse
Hardware not software. You had a stuck power button. By forcing the reboot with the power button you unstuck it. If you don't believe it research Occam's razor. Glad you got it fixed(unstuck) though.:victory:
EDIT: Here are some other people who have had the same issue on samsung phones.
Stuck power button
Stuck power button
Stuck power button
If you need any more let me know. lol

[Q] Phone won't boot into recovery or otherwise

Hi there,
Sorry but I think I finally found the right forum for this and I wanted to take one more stab before kissing this phone goodbye.
I have a Rogers Galaxy SGH-i727R. About three weeks ago, the phone started re-starting on it's own. I though maybe it was a sticky power key and had that replaced. The problem persisted. I then noticed that it was primarily upon receiving text messages that the phone would reboot. So it seemed it was a software issue. I am running the stable build of CM9.
Yesterday the phone rebooted and never got off the angry alien screen. I pulled the battery, charged it etc and still could not get it to fully boot up. I left it for over an hour. I finally decided to call it quits and re-flash the phone. Problem is, it will not boot into recovery at all. When I hold down Vol + - and Power, it jsut goes into a loop of vibrating every three seconds until I let go and then it tries a normal boot again. Once, I briefly got a screen saying I was trying to install custom software and to press volume up to do so, but before I could hit volume up, the phone cycled off.
I should also mention that the four buttons on the bottom of the screen do not work. I accidentally sliced the wires on the side of the phone when opening it up. I use a software button saver widget to access their functions. I wonder if that issue is related....
Thanks for any advice. I would like to get into recovery so I can load a new ROM or a stock ROM.
If you haven't ventured there yet in this forum I'd recommend Vincom's roundup on just about everything http://forum.xda-developers.com/showthread.php?t=1652398. I don't know if it will help much in your situation but it's worth a look. Also, you may want to research usb jigs, not sure if they will work with our devices though ... research is the key word.
tonyrage.stc said:
Hi there,
Sorry but I think I finally found the right forum for this and I wanted to take one more stab before kissing this phone goodbye.
I have a Rogers Galaxy SGH-i727R. About three weeks ago, the phone started re-starting on it's own. I though maybe it was a sticky power key and had that replaced. The problem persisted. I then noticed that it was primarily upon receiving text messages that the phone would reboot. So it seemed it was a software issue. I am running the stable build of CM9.
Yesterday the phone rebooted and never got off the angry alien screen. I pulled the battery, charged it etc and still could not get it to fully boot up. I left it for over an hour. I finally decided to call it quits and re-flash the phone. Problem is, it will not boot into recovery at all. When I hold down Vol + - and Power, it jsut goes into a loop of vibrating every three seconds until I let go and then it tries a normal boot again. Once, I briefly got a screen saying I was trying to install custom software and to press volume up to do so, but before I could hit volume up, the phone cycled off.
I should also mention that the four buttons on the bottom of the screen do not work. I accidentally sliced the wires on the side of the phone when opening it up. I use a software button saver widget to access their functions. I wonder if that issue is related....
Thanks for any advice. I would like to get into recovery so I can load a new ROM or a stock ROM.
Click to expand...
Click to collapse
All I can tell you is that your problem sounds exactly like a stuck power button. I know you replaced it but all the symptoms you point out suggest stuck power button. Maybe try cleaning it again?
Sent from my SAMSUNG-SGH-I727 using xda app-developers app
rushi.1986 said:
All I can tell you is that your problem sounds exactly like a stuck power button. I know you replaced it but all the symptoms you point out suggest stuck power button. Maybe try cleaning it again?
Sent from my SAMSUNG-SGH-I727 using xda app-developers app
Click to expand...
Click to collapse
yes but i wouldn't rule out
I should also mention that the four buttons on the bottom of the screen do not work. I accidentally sliced the wires on the side of the phone when opening it up. I use a software button saver widget to access their functions. I wonder if that issue is related....
Click to expand...
Click to collapse
rushi.1986 said:
All I can tell you is that your problem sounds exactly like a stuck power button. I know you replaced it but all the symptoms you point out suggest stuck power button. Maybe try cleaning it again?
Click to expand...
Click to collapse
But if it were a stuck power button it would not stay on the loading screen indefinitely, no? If I hold down the power button while booting, it will turn the phone off.
Hold vol +- and pwr until it vibrates let go of pwr continue to hold vol +-. You were letting go of all of them at once going by your described method.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
mtdew said:
Hold vol +- and pwr until it vibrates let go of pwr continue to hold vol +-. You were letting go of all of them at once going by your described method.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
Click to expand...
Click to collapse
****. I am a total moron. The phone still reboots after receiving a text but I was able to boot into recovery. Thanks.

[Q] Nexus 5 vibrating but touchscreen not responding and screen not turning on

My cousins Nexus 5 screen is not turning on and the touchscreen isn't responding to anything however when using the power button it vibrates, I assume this means a replacement screen etc is needed but I though I'd just check first? Thanks in advance
jackinho24 said:
My cousins Nexus 5 screen is not turning on and the touchscreen isn't responding to anything however when using the power button it vibrates, I assume this means a replacement screen etc is needed but I though I'd just check first? Thanks in advance
Click to expand...
Click to collapse
has your friend tried rebooting his phone? long press the power button for 15-20 seconds, then press again to boot up. there are many reasons why the screen might not be turning on, some not even relating to the screen.
simms22 said:
has your friend tried rebooting his phone? long press the power button for 15-20 seconds, then press again to boot up. there are many reasons why the screen might not be turning on, some not even relating to the screen.
Click to expand...
Click to collapse
This worked on my device. It went off while I was at the metro traveling to work. It vibrated and I was unable to turn on the screen to check what it vibrated for.
Could you, please, share some reasons why we might be seeing this issue?
The phone has not been rooted and is running stock kitkat 4.4.2. It was upgraded using sideload as I was not willing to wait for the OTA.
I can't remember anything to reproduce the problem. All apps were closed and three updates waiting at the play store.

Phone doesn't turn on unless it's plugged in and then it keeps rebooting every 2 seco

My phone has been acting weird the past couple days. It would randomly reboot but when it rebooted, I would have to hard reset it for it to completely boot up. For the past couple days it would happen a couple times a day. Today it was doing it almost every hour. I was just waiting to get home from work so I could back up the phone and wipe and then it just turned off. I couldn't get it turned back on. When I plugged it into the charger it turns on the Google logo and then reboots over and over again. When I unplug it, it shuts off. I can't even get it to boot into recovery or bootloader because it keeps rebooting every couple seconds.
Just a guess, but I think you're power button is shorting out. See what others think.
Sent from my Nexus 5 using XDA Free mobile app
jd1639 said:
Just a guess, but I think you're power button is shorting out. See what others think.
Sent from my Nexus 5 using XDA Free mobile app
Click to expand...
Click to collapse
Yea I've seen it in another post. That doesn't explain why the phone keeps rebooting as soon as I plug it in. But I have noticed that for the past couple days, the power button was becoming really sensitive as in I would hit the power button to turn the screen off and then it would immediately turn the screen back on. But if its a hardware issue then there's nothing I can do but contact Google to send me a replacement.
armandosal said:
Yea I've seen it in another post. That doesn't explain why the phone keeps rebooting as soon as I plug it in. But I have noticed that for the past couple days, the power button was becoming really sensitive as in I would hit the power button to turn the screen off and then it would immediately turn the screen back on. But if its a hardware issue then there's nothing I can do but contact Google to send me a replacement.
Click to expand...
Click to collapse
I think as soon as you plug it in the battery gets enough charge that it boots but then the power button shorts out and it reboots
Sent from my SAMSUNG-SGH-I727 using XDA Free mobile app
I tried tapping on the phone by the button and it turns on the phone for a little bit. Same thing if I wiggle the power button. I'm convinced that's the issue.

TWRP seemingly bricked my pixel

So I was trying to make a backup with the latest twrp and I got this error code: createTarFork() process ended with ERROR=255.
I figured, to hell with it I'll reboot. Twrp asked if I wanted to install the twrp app, I said no. Screen goes back, never to turn on again. No button combo holding for any length of time helps. Bummer, right? I was running DU at the time.
Now I'm worried about the RMA, I hope they don't deny me after they get it back into the warehouse.
stonew5082 said:
So I was trying to make a backup with the latest twrp and I got this error code: createTarFork() process ended with ERROR=255.
I figured, to hell with it I'll reboot. Twrp asked if I wanted to install the twrp app, I said no. Screen goes back, never to turn on again. No button combo holding for any length of time helps. Bummer, right? I was running DU at the time.
Now I'm worried about the RMA, I hope they don't deny me after they get it back into the warehouse.
Click to expand...
Click to collapse
Does anything happen when you plug the phone into the wall or into the PC?
Have you tried just holding down power for a while?
are you on beta hardware. i noticed today my phone was unresponsive installing twrp it would go black and disconnect from pc. what i had to do to get it to turn back on since it stayed lik that even holding the power button for a while was just hold the volume key and power for a couple min down and power if that dont work try volume up and power just random pushes to get the phone it will go to some debugging screen then just holding buttons till it restarts
exad said:
Does anything happen when you plug the phone into the wall or into the PC?
Have you tried just holding down power for a while?
Click to expand...
Click to collapse
cgrimm9 said:
are you on beta hardware. i noticed today my phone was unresponsive installing twrp it would go black and disconnect from pc. what i had to do to get it to turn back on since it stayed lik that even holding the power button for a while was just hold the volume key and power for a couple min down and power if that dont work try volume up and power just random pushes to get the phone it will go to some debugging screen then just holding buttons till it restarts
Click to expand...
Click to collapse
I've tried every button combo. Plugged it in to wall overnight and computer. No response. Makes me paranoid about twrp for pixel because I was rebooting from there, but then again it doesn't seem to be a big problem in the community
stonew5082 said:
I've tried every button combo. Plugged it in to wall overnight and computer. No response. Makes me paranoid about twrp for pixel because I was rebooting from there, but then again it doesn't seem to be a big problem in the community
Click to expand...
Click to collapse
I thought I was in trouble a couple times. I had to hold volume down and power button for a long time. Finger started to go to sleep
cgrimm9 said:
are you on beta hardware. i noticed today my phone was unresponsive installing twrp it would go black and disconnect from pc. what i had to do to get it to turn back on since it stayed lik that even holding the power button for a while was just hold the volume key and power for a couple min down and power if that dont work try volume up and power just random pushes to get the phone it will go to some debugging screen then just holding buttons till it restarts
Click to expand...
Click to collapse
I also had the same situation go on as well. I'm not sure what's is happening but when I boot TWRP the thing just becomes unresponsive and a black screen. I had to hold the buttons for nearly 30 seconds before it worked. Pixel isn't a friendly device to mod. :-/
mac796 said:
I thought I was in trouble a couple times. I had to hold volume down and power button for a long time. Finger started to go to sleep
Click to expand...
Click to collapse
That's bizarre! I'll try when I get home. I wonder what's causing this. Did it ever happen again to you? And were you using twrp when it happened?
stonew5082 said:
That's bizarre! I'll try when I get home. I wonder what's causing this. Did it ever happen again to you? And were you using twrp when it happened?
Click to expand...
Click to collapse
Yes I was using twrp, I was flashing test build. But it put me into a loop. U got a black screen, and if your computer won't even recognize it , you may be out of luck. I have been using rc2 I know it's not great for restoring backups, but it works good for everything else
That is so strange. I have never come across this issue before. Unfortunately, if you can't seem to get your PC to recognize the device, I don't think there's anything you can do. I guess we will have to be wary about using TWRP. I haven't had any weird issues myself with TWRP but I know others have. Here's hoping google will honor your warranty. I think they will, I don't think see them spending the time to look into what caused your phone to die so I think you'll be able to get a replacement without much hassle.
If you wouldn't mind, please keep us updated.
exad said:
That is so strange. I have never come across this issue before. Unfortunately, if you can't seem to get your PC to recognize the device, I don't think there's anything you can do. I guess we will have to be wary about using TWRP. I haven't had any weird issues myself with TWRP but I know others have. Here's hoping google will honor your warranty. I think they will, I don't think see them spending the time to look into what caused your phone to die so I think you'll be able to get a replacement without much hassle.
If you wouldn't mind, please keep us updated.
Click to expand...
Click to collapse
So far so good, sent then phone in and sold the replacement. I'm getting the OnePlus 3t instead.

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