[Q] my device won't boot! - Windows Phone 8x by HTC

Hello,
from nowhere my HTC 8x (GDR3) full battery charged.. SHUTDOWN! and when I try to turn it on.. I got HTC logo then black screen.. I try many times to boot up but it doesn't works, it's stuck in same black screen..
I tried to connect it to charge.. nothing happens.. no boot up.. no LED light.. (just HTC logo then black screen)
Also, I tried hard where reset.. it doesn't work ..
when I press power button, phone vibrates, white htc screen appears, screen goes black..
any thought ? advice? help?

one time when I try to hard reset.. I got blue screen.. another time "!" screen.. after that I got the screen with gears.. the I got blue screen with face about this error "dpc watchdog violation"...

Related

[CM11] Phone stuck on black screen after reboot

So I use Adaway on my M8 running CM11 M9 (I think it's m9), and I just updated the host files, and when it said to reboot, I said okay. Now, it's stuck on a black screen that is actually the screen being on, it's just showing the color black. Right now the plan is for the phone to run out of battery, and hopefully I can boot into the phone after that. Can anyone recommend something else? Because I might be stuck in a boot loop with a black screen.
Hold power and volume up until phone shuts off, it will then turn on again. If you get in a boot loop, hold power and volume up u til the screen goes off then hold volume down when the screen goes on and you will be in hboot

[Completed] [Q] Moto G (U.S Cellular) boot loop. wont charge.

ok so i have a moto g that is fully stock and all my apps were from the playstore and i never noticed any bad lag at all. but one day, out of the blue, i wake up to my phone showing the blue m logo and then a black screen and repeat.
so i tinkered around with it and searched the internet and heres what i found out:
I can get into fastboot mode but cant use any tools except for the barcode tool otherwise the phone just goes back into its boot loop. (yes i selected with the volume up key)
the phone has no power what so ever unless its plugged in. and i dont have to press anything to start the loop, it starts on its own as soon as i plug it in. the led blinks white twice and shows the m logo for about 5 seconds then a black screen and repeats once more then it is black for about 5 minutes then its goes into the loop once more.
i cant flash the stock firmware because when i plug the phone into my computer and put it in fastboot mode, the fastboot menu pops up for a mere seconds then the screen goes black and goes into the loop again.
the phone is not damaged and worked with no problems a few days back. i have been through countless websites!
any ideas?
Hi,
Can you specify if it's a 2013 or 2014 moto X.... And I will have your thread moved to your device Q&A section.
Sounds like a stuck power button to me though.
Thanks!

Zte concord 2 hard bricked and cant get into recovery

Every time i try to charge my phone with the battery it starts blinking red for a while before turning soild red.
tried pluging into pc phone will show the mertopcs logo for 3 seconds then screen goes black,tried holding volume up key to get into bootloader, merto logo comes up for half a second before screen goes black, did this guide androidforums.com/threads/htc-evo-4g-unbrick-guide-hard-brick-only-wont-turn-on-or-charge.456048 still wont work dose not seem the phone will even charge at this point just a black screen with solid red light help

mi4 black screen issue

i bought a new xiaomi mi4 phone which had multi-language miUi 6 on it..before i was able to use it the screen got cracked .so i ordered a new replacement screen.
after i got the new screen i replaced the screen.. i turn it on and MI logo showed up for few seconds and it went to all black again... all 3 buttons light up and vibrate on press i tried many time but nothing... i charged it and charging logo showed up i turn it on but no picture on screen.. using MI PC suite it promt me to flash with stable/Beta.. i selected stable and process completed successfully. I charged more turn it on and MiUI 6 (orange and white) vr 6.6.2.0 a different menu showed up...screen stays on for 5 seconds only then goes to black again.. i went thru welcome wizard and set up most of the apps are in chinese now.. screen comes ON for 5 seconds only when i press power button ..it goes to black again.. i searched online and it said turn off proximity sensor i turn it off quickly.. but still nothing.. still screen goes off after few seonds..
Any way to fix it.. how to fix it..it was working before screen cracked.
Please help?
here is more update
i flashed again with stable rom from mi website using miflash tool with cancro_images_V6.6.2.0.KXDCNCF_20150626.0000.4_4.4_cn_fa0b5518ce
and i selected .flash_all_except_storage.bat: option
process finished successfully but screen stays only for 2 seconds and goes black.
i press power button and screen comes for couple of seconds and goes to black again.
ministerjee said:
i bought a new xiaomi mi4 phone which had multi-language miUi 6 on it..before i was able to use it the screen got cracked .so i ordered a new replacement screen.
after i got the new screen i replaced the screen.. i turn it on and MI logo showed up for few seconds and it went to all black again... all 3 buttons light up and vibrate on press i tried many time but nothing... i charged it and charging logo showed up i turn it on but no picture on screen.. using MI PC suite it promt me to flash with stable/Beta.. i selected stable and process completed successfully. I charged more turn it on and MiUI 6 (orange and white) vr 6.6.2.0 a different menu showed up...screen stays on for 5 seconds only then goes to black again.. i went thru welcome wizard and set up most of the apps are in chinese now.. screen comes ON for 5 seconds only when i press power button ..it goes to black again.. i searched online and it said turn off proximity sensor i turn it off quickly.. but still nothing.. still screen goes off after few seonds..
Any way to fix it.. how to fix it..it was working before screen cracked.
Please help?
Click to expand...
Click to collapse
My cousin also has the same problem. Did you get through the problem? If so, how?
No solution??

LG G4 won't go past LG Logo

Hi, so I was using my phone yesterday and suddenly it froze. Pressing the on-screen home button would do nothing so like it was completely frozen. So I took out the battery and put it back and tried to restart it. It would load to the LG Logo and then just a blank screen. I know it's not a battery issue because when I plug it in, it will show the charging icon and charge. I've tried data resetting it, but even that didn't help or change anything. Also when I did a data reset, it will freeze on the screen for a few seconds after I pressed yes and then would restart and show me the LG logo and then the blank screen again.
Any help for a poor soul who just wants to text this cute new girl he's started talking to and doesn't wanna mess up his chances? Thank you <3
Edit:The Blue LED also flashes on start up
yotorogo said:
Hi, so I was using my phone yesterday and suddenly it froze. Pressing the on-screen home button would do nothing so like it was completely frozen. So I took out the battery and put it back and tried to restart it. It would load to the LG Logo and then just a blank screen. I know it's not a battery issue because when I plug it in, it will show the charging icon and charge. I've tried data resetting it, but even that didn't help or change anything. Also when I did a data reset, it will freeze on the screen for a few seconds after I pressed yes and then would restart and show me the LG logo and then the blank screen again.
Any help for a poor soul who just wants to text this cute new girl he's started talking to and doesn't wanna mess up his chances? Thank you <3
Edit:The Blue LED also flashes on start up
Click to expand...
Click to collapse
Was the phone completely stock? If so this is a hardware failure and only fix is warranty
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