Black screen after flashing a ROM - General Questions and Answers

I flashed a custom ROM into my 2din android device and it turned to black screen and nothing appears on it, just a black screen. I tried to go to the recovery mode and I couldn't see anything on the screen , black all the time. I noticed the side buttons of the 2din blinks for a fraction of a second every minute.
Please help me to solve this issue .

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Black screen of death

i have bought a nexus 5 nearly a year now and it has worked perfectly the problem occurred two weeks ago it happened rarely when i unlock the phone it has a black screen so i had to force reboot with holding the power button , and it started to happen nearly every time i try to unlock it . i had stock android 4.4.4 then i tried at first factory reset and no positive results tried to go back to 4.4 same issue then a friend recommended cm 11 worked for nearly 24h perfectly :good: then the same thing happened :crying: , now im on Slimkat and the black screen appears nearly every time i unlock it now even if unlock the phone successfully with no problems the screen turns black at any time now (home screen apps phone calls ...) it even turns black in boot after the google logo appears (the time the rom logo appears) although it never ever turns black at boot loader or recovery mod . previous searchs i have made lead me that the problem is caused by turning auto-brightness on and/or animation scale must be more than 0.5 and they are not the cause in my case . i think this is a software problem and not a faulty hardware anyone can help me find a solution for this problem please
this is a recording i have made of what i see : /Py5Tv5w8bGo
and this is another screen record made with adb while this problem occurred from 0:09 its a black screen for me and as you can see it's freezing :
/uojsVZfm1y8​

Galaxy S6 screen flickering

Greetings.
I've recently been struggling with a problem with my Galaxy S6 and I've searched far and wide on the interwebs for a solution, with no avail.
You see, whenever I turn my phone on, or wake it up from the lock screen, the screen flickers one or two times, but doesn't always turn on.
They keys are active, touchscreen is active, but no image.
Sometimes I have to try and unlock my screen two or three times to get an image, sometimes it turns on after the first flicker.
An example of what I am experiencing is at https://www.youtube.com/watch?v=CyiDgpUSkaE
[edit] Another example is this: when switching the display brightness, the screen goes to crap and starts flickering like crazy, and at minimum brightness text goes unreadable and small (video) https://www.youtube.com/watch?v=HIMFaCy_KVY
I am not rooted, everything is stock FW, I had android 6 stock and recently upgraded to 7 stock OTA and the same issue persists.
I cannot access download mode or recovery because the screen won't turn on. Only time it turns on is when Android is booted. Even when booting, the blue led flashes because the device is booting but I have no image.
Please contribute with some ideas, I cannot wipe cache from recovery because I can't see anything even if I try to boot recovery (or download).
Thank you in advance!
Did you resolve this issue? If so, how? Mine started to do the same after a short fall. My initial thought was hardware but I can get into recovery and the screen functions just fine there.

Need help. After i lock my phone it goes on a blinking white screen

My phone goes on a white screen after i lock it. Then when i try to lock it again and open it there's nothing. i mean all black i already tried flashing stock rom but it is still the same

Half of the screen is black

Hello !
The bottom of my screen is completly black but the touchscreen is still working.
I went running with my phone in my hand and the weather was vert cold. At first the bottom half of my screen was flickering/grey and then it went completly black
What I already try to solve the issue :
- install TWRP and wipe everything
- disconnect the battery from the phone
Any thoughts ? How could I know if it comes from the motherboard or the screen?

A51 black screen working

Hi everyone, i have a weird problem: my phone's screen works perfectly, i can use it in recovery mode and download. It shows also the boot logo and the battery level while charging (if turned off). But when it loads the os the screen turns black and i don't know what to do. I wiped data by recovery and flashed an official rom with odin but the screen remains black.
The phone is 1 year old, does warranty cover this?

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