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Question PC - black screen/No display and green light on mobo

ElVisTek-1337

Reputable
Feb 4, 2021
23
1
4,515
Hi guys,

I hope you can help me out, in the morning I just shut down my pc entirely and today that I've tried to power it on, the mobo stay on 'green light' and the indicator says 'boot'

But there's no display and after a few seconds, the monitor start to flicker 'No signal' then 'black screen' again and again, fans are spinning, but I don't know what to do.

I've taken out the GPU, cleared the CMOS, took out the CMOS battery, tried 1 ram in each slot (4 slot), also I have disconnected any usb port/sata and leaves only the NVMe but still no luck.

Any suggestion is welcome.

Asus Prime B550 Plus
RX 7700 XT
PSU: 850W XPG Core Reactor
Ram Silicon Power (16x4)
 
the mobo stay on 'green light' and the indicator says 'boot'
That would indicate that your boot drive is having an issue, it might've conked out or your board's BIOS is corrupt. You can try and remove all drives from your system and attach a spare drive to the board and proceed to install an OS onto it.

Your specs seem incomplete, what is the make and model of your storages? Got a link to your ram kit if you're unable to identify them...? You can look at the stickered info on the side of the ram stick btw.
 
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the mobo stay on 'green light' and the indicator says 'boot'
That would indicate that your boot drive is having an issue, it might've conked out or your board's BIOS is corrupt. You can try and remove all drives from your system and attach a spare drive to the board and proceed to install an OS onto it.

Your specs seem incomplete, what is the make and model of your storages? Got a link to your ram kit if you're unable to identify them...? You can look at the stickered info on the side of the ram stick btw.

Hey,
here's the RAM's link please note these are 8x2, I bought 16x2, however it is the same as the picture (2 sets).
1 NVME Kioxia 256gb
3 HDD / 1Tb Barracuda / 1 Tb Toshiba / 2Tb Barracuda

Edit:

So you mean, my primary storage (NVME) might be corrupted and that's why the PC won't boot? Because I don't have display only a 'black screen' and after a while, I receive 'No signal' and get back on a 'black screen' and again, 'No signal' for some seconds and then stop, but the black screen remain (Waiting to receive an image/response from the GPU, I can see in the corner the LEDs activated in the monitor).

Edit 2:

I think the BIOS is corrupted, if I am not able to access to the Asus BIOS, not even the name displayed or go through the 'boot' as the green light stay on forever...
 
Last edited:
Guys, quick update.

I've replaced the motherboard and the faulty code still there... I've bought the same motherboard and the 'green light' is always active and there's no display/boot logo...

Not only that, but I'm not sure if the culprit might be the CPU or the Power Supply (850W XPG Core Reactor)....

Edit:
Got some news, guys... I've re-tested it using a different cable (Not HDMI)... And now we got VGA (white light)... So I suppose the culprit is the GPU? Probably, I might need to test another card.

Edit 2:
So, now the PC got the white light on motherboard, no display and after a min or 2, then it shut down itself
 
Last edited:
Another update...

I have borrowed a GPU (RX 5500XT) from a friend, there's the same error code (White light - VGA)... So... Anyone has an idea what's going on???? I'm heavily thinking it might be the PSU