Help = Computer won't POST.

Spikey · 6 Feb 2016 at 11:22

Hi all,

Gone to turn my computer on before work and it was booting up but not showing anything on the display and then periodically rebooting itself. Eventually I've removed my GPU (EVGA GTX 980ti classifield) and it's booted up first time. Is it likely that my card is faulty or could it be the PSU? I've recently had the GPU RMA'd and the PSU is only a month old (brand new G2 EVGA 750W GOLD). I'm really hoping it's not the card but I can only assume it's that? It's been fine the past few bar the odd crash in R6 Siege.

Thanks.

I've removed the overclock on my CPU and placed the GPU back in and it appears to be fine. I assume it was an unstable OC?

zola25 · 6 Feb 2016 at 12:07

If it's working at stock it does sound that way, or it could still be the PSU struggling potentially.

Might be worth trying to slowly work back up to your overclocked speed and see how it goes.

Spikey · 6 Feb 2016 at 12:22

Will do, would be surprised if it was the PSU, checked that in the BIOS and seems okay.

Delvis · 6 Feb 2016 at 13:33

You either need to try the card in another system or try another psu to be certain

Spikey · 6 Feb 2016 at 14:48

I may just swap out the PSU to rule that out. I can't see it being the card as its been running fine. As soon as I removed the overclock it booted.

Delvis · 6 Feb 2016 at 14:53

It.may just be the card unable to run at those clockspeeds then.

Spikey · 6 Feb 2016 at 15:52

It was my CPU overclocked not the GPU, apologies I should have been clear. Will do some further testing tonight but it seems like it didn't like my overclock. I was using the Asus BIOS tool to overclock rather than manual settings so that might be why.

Delvis · 6 Feb 2016 at 18:08

No I've just misread.

It could be a few things, CPU unable to handle the clock (try manual), PSU unable to handle the extra load...or motherboard.

Spikey · 16 Feb 2016 at 22:03

This problem has started again. Generally when computer has been left overnight it won't post, when I remove GPU it turns on and works for a few days and then it stops working again. Any ideas? I'm not sure if it's the PSU or GPU? Weirdly when it posted the other day the POST screen reported a failed overclock even though I'm not running any overclock? I can't imagine it would be a faulty GPU as its fine in gaming but when I remove it, it boots so I place it back in and it works for a further few days. :confused:

joedeath332 · 16 Feb 2016 at 22:55

Did you try clearing the Cmos , due to it saying about the failed overclock even though you had none running.

Spikey · 16 Feb 2016 at 22:57

Not tried that yet, what would that do?

Spikey · 16 Feb 2016 at 23:34

Cleared CMOS same thing pretty much. I'm convinced it's the PSU tbh. Weirdly if I lift my PC case and go to put it down it powers off and be kettle plug seems very flimsy, barely had the PSU a month so I will try that as a first port of call to shop I bought it from and get a replacement from OCUK. Can't see the GPU causing it at all.

Delvis · 17 Feb 2016 at 11:56

You would be surprised to be honest.

They the pau, then go from there

oaksmokedbacon · 17 Feb 2016 at 15:44

I had a similar issue to yours. I RMA'd the gfx card as it wasn't displaying anything and the PC kept restarting or not booting with any display. this came back all clear.

I then changed the PSU and then found one of the RAM chips had failed. Not sure due to power failure or they were the original cause. I'd check the RAM with memtest (one stick at a time). you might find that could also be the cause.

New RAM and PSU and I'm now cooking with Gas!

Idleman · 17 Feb 2016 at 16:11

Is your ram set at XMP?

Spikey · 17 Feb 2016 at 19:00