gfx card is not recognised... sometimes. Help needed.

Stiffler05 · 26 Mar 2015 at 22:42

Hi,

I've been struggling with this problem for a while now and its really bugging me. Basically about 1/3 of the time i start my pc the gfx card isn't recognised. Its a hd7950 in an asrock z77e-itx. When it does recognise the gfx card the pc runs fine and theres no issues with intense gaming etc. However when i shut it down and turn the pc on the next day the gfx card sometimes isn't recognised (nothing in device manager, can't install amd drivers etc). Literally nothing has changed or been moved overnight and yet the card is for some reason not being recognised. If this happens in the morning the card won't work for the rest of that day no matter how many restarts i try or how much tinkering i attempt. It will be another 24-48 hours before it'll randomly start working again.

Sorry for the long post, but has anyone had experience with something like this or got any ideas? I'm at a loss.

wazza300 · 26 Mar 2015 at 22:49

It could be a cold boot/detection issue

Are you on latest motherboard BIOS? How much PC ram are you running

5960xNvidiaGamer · 26 Mar 2015 at 22:51

Sounds like either the card or motherboard needs an RMA.

Stiffler05 · 26 Mar 2015 at 23:15

I've updated the bios to the most recent version whilst trying to sort this out. No change unfortunately. I've got 8GB of ram. The gfx card works perfectly in another pc, i've tried it myself. And i also tried a known working gfx card in my pc while the issue was occurring and that made no difference.

5960xNvidiaGamer · 26 Mar 2015 at 23:23

If it's only happening 1/3 of the time did you spend enough time testing the parts? hopefully its not hardware related.

Stiffler05 · 26 Mar 2015 at 23:34

I think i have. Like i said, how can the gfx card not be recognised at one time, then 24 hours later work perfectly? Absolutely nothing has been changed, no software, no hardware, the pc hasn't been moved an inch... all thats changed is power on or power off.

wazza300 · 26 Mar 2015 at 23:48

Try two clicks more vtt

It will be at stock 1.05v in bios

Stiffler05 · 26 Mar 2015 at 23:55

wazza300 said:
Try two clicks more vtt

It will be at stock 1.05v in bios

I'll give that a try, thanks. Does it go up in increments of .01 or .05 normally?

deano-5 · 26 Mar 2015 at 23:58

Does gpu itself have a bios update?

5960xNvidiaGamer · 26 Mar 2015 at 23:58

Thats a great idea Wazza. I hope it works for you Stiffler.

wazza300 · 26 Mar 2015 at 23:58

I'm not sure but try with 1.06v to 1.07v and see if that helps with the cold startups and GPU detection

areksnumbr1sxylady · 27 Mar 2015 at 03:26

Its over for you matey.

Sorry.

Stiffler05 · 27 Mar 2015 at 08:55

wazza300 said:
I'm not sure but try with 1.06v to 1.07v and see if that helps with the cold startups and GPU detection

Tried with a few vtt voltage settings this morning. Unfortunately no change. Gfx card is still not recognised. Any other ideas?

Karateyid · 27 Mar 2015 at 09:02

Any mates able to lend you a card to test with?? Or pass your card to them?? Could be the card could be the connection on your motherboard.

Stiffler05 · 27 Mar 2015 at 09:05

Karateyid said:
Any mates able to lend you a card to test with?? Or pass your card to them?? Could be the card could be the connection on your motherboard.

I've tested the gpu already. It works fine in another pc. And I tried a known working gpu in my pc when the issue was occurring and that didn't work.

Karateyid · 27 Mar 2015 at 09:14

I'd say dodgy board then..

implosiveturnip · 27 Mar 2015 at 09:17

How old and what brand/model is your PSU? Possibly power supply on it's way out?

Stiffler05 · 27 Mar 2015 at 10:11

implosiveturnip said:
How old and what brand/model is your PSU? Possibly power supply on it's way out?

Its a pc power and cooling silencer mk 3, 600W. The pc was a bitfenix prodigy system build from overclockers about 3 years ago.

I did wonder if it might be the psu, but if that was the case wouldn't it buckle under heavy load when the gfx card is actually recognised? Returning the cpu or gfx card to stock makes no difference in the recognition process. I tried that as a first resort.

wazza300 · 27 Mar 2015 at 11:20

I still think its a cold boot issue

what make/model of gpu? try with 1.10v vtt and see if that helps

can also try cleaning the gold contacts on the gpu that slot into the motherboard

kthula666 · 27 Mar 2015 at 12:09

New CMOS battery. (random)