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Sprint HTC One won't turn on, flashing Home and Back buttons.

I was coming from Cyanogenmod nightlies, and was trying to flash stock, but the phone just randomly shut off and it won't turn back on. When I hold down the power button the only response I get is the home and back buttons will blink white for the duration of me pressing down the button. Thank you for any possible help.

atkinsman said:
I was coming from Cyanogenmod nightlies, and was trying to flash stock, but the phone just randomly shut off and it won't turn back on. When I hold down the power button the only response I get is the home and back buttons will blink white for the duration of me pressing down the button. Thank you for any possible help.
Click to expand...
Click to collapse
Can you get into the boot loader?

Keep holding down power button. Button lights will blink for about 12 secs, then let go of power and hold down vol down until bootloader pops up.
via ONE.

CM10 won't load. home and back buttons lit constantly
Blackcircle said:
Keep holding down power button. Button lights will blink for about 12 secs, then let go of power and hold down vol down until bootloader pops up.
via ONE.
Click to expand...
Click to collapse
Hi. This just happened to me as well, trying to flash CM 10.1.3 to get a GPS lock from a sense rom. Problem is, I can't get to the bootloader and the menu/back lights don't stop flashing. So there's no point where they stop flashing and I can then use the volume button to get to the bootloader. And they stay lit even when I am not pressing anything. I could use some help here.. hate to think I've bricked this very expensive slab of metal. Thanks.

Same problem.
Somebody please help.
EDIT:
Solved. Bright light trick.
Shine a bright light on it and press + hold power and vol down. Make sure the twin sensors aren't covered.

Thanks guletz - you just saved me a call (or a visit) to the Sprint store.

Phone in call...
guletz said:
Same problem.
Somebody please help.
EDIT:
Solved. Bright light trick.
Shine a bright light on it and press + hold power and vol down. Make sure the twin sensors aren't covered.
Click to expand...
Click to collapse
Will this work (Reset and/or bright light) if the phone is in a call. I am stuck listening to a recorded message and can't hang up

k-rock said:
Thanks guletz - you just saved me a call (or a visit) to the Sprint store.
Click to expand...
Click to collapse
This is also happening to most of the sprint 4.3 custom roms. Not sure if everyone is building on top of the same rom image or fimrware issues...let me know if anyone is getting the same issues after flashing any of the sprint custom roms.

Phone not responding to ANYTHING (screen off)

Hey everyone, i have kind of a big problem. Yesterday i rooted my phone. Fot S-off and everything not problem. Flashed Slim Bean rom and i was a happy camper. Went to work and phone was working fine. Hours later, i tried to unlock my phone by pressing the power button and nothing happened. i tried holding the power button to make the phone shutdown and the keys lit up and kept on blinking but nothing happened. I tried calling the phone and from another line and although on the other phone it sounds like its one, my one wont ring or anything. I got home and tried to fastboot reboot but the damn thing is not on debugging mode apparently, so it just says waiting for device. I need HELP ASAP!!!!!! Thanks in advanced!

If the buttons blink, keep holding the power button until they stop blinking (this will take over 10 seconds!). That will force a hard reboot.

moises319 said:
Hey everyone, i have kind of a big problem. Yesterday i rooted my phone. Fot S-off and everything not problem. Flashed Slim Bean rom and i was a happy camper. Went to work and phone was working fine. Hours later, i tried to unlock my phone by pressing the power button and nothing happened. i tried holding the power button to make the phone shutdown and the keys lit up and kept on blinking but nothing happened. I tried calling the phone and from another line and although on the other phone it sounds like its one, my one wont ring or anything. I got home and tried to fastboot reboot but the damn thing is not on debugging mode apparently, so it just says waiting for device. I need HELP ASAP!!!!!! Thanks in advanced!
Click to expand...
Click to collapse
Hold the phone directly over a bright light and try to reboot. I can't explain why this procedure works but it did for me and several others. Just make sure the light is shining on the two sensors on the top left corner of the phone.

Marcm15 said:
Hold the phone directly over a bright light and try to reboot. I can't explain why this procedure works but it did for me and several others. Just make sure the light is shining on the two sensors on the top left corner of the phone.
Click to expand...
Click to collapse
The phone uses the light sensor to make sure the phone isn't in your pocket or some other place and isn't getting reset by accident.
Sent from my HTC One using xda premium

Be very careful flashing AOSP based roms. There have been several users reporting "bricks" while using these roms. Both a solution and a cause are unclear.

Marcm15 said:
Hold the phone directly over a bright light and try to reboot. I can't explain why this procedure works but it did for me and several others. Just make sure the light is shining on the two sensors on the top left corner of the phone.
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Click to collapse
Dude, thank you so much for that, it solved my issue! I don't know why I didn't think of it!!

If the buttons are flashing, I would consider that a response.
Just saying.

eyeisdasteve said:
The phone uses the light sensor to make sure the phone isn't in your pocket or some other place and isn't getting reset by accident.
Sent from my HTC One using xda premium
Click to expand...
Click to collapse
moises319 said:
Dude, thank you so much for that, it solved my issue! I don't know why I didn't think of it!!
Click to expand...
Click to collapse
Glad it worked for you. The explanation given above makes sense as to why it works...

[Q] Wierd problem when turning screen off and on

Hey guys, im having a bit of a problem. My phone is shuting off on itself.
Everytime i turn it on, it boots up no problem, but when i hit the power button to turn the screen off, when i want to turn the screen on again by pressing the power button, the screen just goes deep blue, and turns off.
I haven't change anything on it for quite a few months now, so i'm not sure why this is happening. Im on Viper 3.5 i think or 3.7, using faux123 kernel, dont remember which version, but an old one with which i never had any troubles... rooted, s-on
Any ideas?
Thanks!
Coldsun15
PD: Logcat in the .rar file...was too big for .txt

Really?? No one??
Well, just for further info... my phone appeared to fix itself, since it stopped doing that weird thing for a couple of days, but now is back... nothing ever changed, no new apps, or settings or anything...
Any ideas welcome
Edit: Attaching new logcats...

coldsun15 said:
Well, just for further info... my phone appeared to fix itself, since it stopped doing that weird thing for a couple of days, but now is back... nothing ever changed, no new apps, or settings or anything...
Click to expand...
Click to collapse
I think your power button is broken (or you may have a related hardware issue). Nothing but a root app can reboot the phone, and I've never seen that happen by accident.

fenstre said:
I think your power button is broken (or you may have a related hardware issue). Nothing but a root app can reboot the phone, and I've never seen that happen by accident.
Click to expand...
Click to collapse
Yeah, i thought about it being hardware but something is off... i mean, if it where the power button, then i shouldnt be able to turn it on easily, or it wouldnt turn off the screen properly, nor would it just start working alright for a couple of days... plus, it didnt recieve any hits or anything during, before or after the problem.
I also thought it could be the screen, but when its on, it works perfectly, as on the first day...
But yeah, I'm not taking hardware problem out of the table...just seems unlikely to me...
Thanks for your answer!
Coldsun15
Edit: also, I just found out it doesnt actually restart...screen just turns dark blue, then it powers the screen off and it wont turn on when pressing power... but i know its on, because i can still hear notification sounds of incoming messages...
Edit2: Just tried same but instead of using power button, i used logo2sleep and home2wake kernel options, and did the on/off with them, and same result...dark blue screen then off and not turning on... so it cant be power button

Phone randomly shut off and wont turn back on

Ok so i just got out of work and went to look at my phone and i pushed the power button and nothing happened. so I held the power button to see if it just shut off ad that also didnt do anything, so then i tried charging... still nothing, volume down + power... nothing. Can you guys please help me with this? I have absolutely no idea whats wrong, and it makes no sense because I literally hadnt changed or done anything with it all day, and i havent changed ROM's recently either(running Insertcoin 6.0.3 if that makes any difference).

Sounds toasted.
Sent from my HTC One using Tapatalk

Yeah its now displaying qhsusb_dload under device manager, is there any fix for that or is it ****ed

Charlielx said:
Yeah its now displaying qhsusb_dload under device manager, is there any fix for that or is it ****ed
Click to expand...
Click to collapse
Hold down both power button and vol down until hardware lights start blinking and keep holding until it reboots.
Sent from my HTC One using Tapatalk

Charlielx said:
Yeah its now displaying qhsusb_dload under device manager, is there any fix for that or is it ****ed
Click to expand...
Click to collapse
ugly.
if it's under warranty take it for repair.

For anyone returning to this thread looking for the solution to the qhsub_dload problem, i contacted HTC and the only way to fix it is to send it in for repair.

Charlielx said:
For anyone returning to this thread looking for the solution to the qhsub_dload problem, i contacted HTC and the only way to fix it is to send it in for repair.
Click to expand...
Click to collapse
i am quite late... but if did it boot up using these tricks?
(original thread: [GUIDE][FIX] Solve Bootloops and no OS on phone!
Basic issues and troubleshooting? Here it goes​
Q: I can't start up my device, not even the soft buttons are lighting up!
A: I know, it sound strange, but you have to do the following thing:
Hold your HTC One below a bright lights source and hold the power button for about 15 seconds or even longer. The charging light will light up. Then hold down the volume down button and try different key combinations!​
Q: I still can't boot up my device!
A: Hold volume down and volume up button and the power button for about 90 seconds. If this doesn't work, try holding your phone below bright light again​

could be memory problem
it could be a memory problem, do you have enough RAM? sometimes the phone also restarts if it lacks free RAM for its apps to be run

Black screen (of Death ?)

Hi guys,
This is my first post on xda, and I will need your help please.
My screen is black, and stay black, the phone is running, but the screen is black, and doesnt show anything.
I tried to reboot it, with the red button next to the SIM card, nothing happened.
I tried to "Power ON + Volume Up" and then restart it, nothing happened.
Notice that the backlight turns on when I pusht he Power button, and turns off when I lock the phone.
So please guys, I'm really embarassed, can someone help me to fix it ?
Thx a lot !
WarningMania

WarningMania said:
Hi guys,
This is my first post on xda, and I will need your help please.
My screen is black, and stay black, the phone is running, but the screen is black, and doesnt show anything.
I tried to reboot it, with the red button next to the SIM card, nothing happened.
I tried to "Power ON + Volume Up" and then restart it, nothing happened.
Notice that the backlight turns on when I pusht he Power button, and turns off when I lock the phone.
So please guys, I'm really embarassed, can someone help me to fix it ?
Thx a lot !
WarningMania
Click to expand...
Click to collapse
I think the display is dead. Take it to a service center and see if they can diagnose it.

Oh god --'
I saw that there was a solution, put it in safe mode, but how can I boot it in safemode by the buttons ?
I mean, how to boot it in safemode when the phone is off ? I cannot get the safe mode by holding "Power Off" and typing "yes" you know.
Thx for the answer
WarningMania