Help please - post but no boot problem

maloflora

maloflora

maloflora

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Joined
19 Aug 2007
Posts
68
Hi all,

I recently ordered a new 1080ti from OC and installed it 10 days ago. All has been fine until yesterday when the PC would post but not boot. Every time the Windows logo appears the power shuts off.

I've tried multiple times, leaving power off for half an hour, etc. Replacing with the previous card (gtx 970) restores it to life again.

In order to get it working again with the new card, I have to take out the new card, put the old one in, boot up, shut down, take out the old card and then put the new one in. Then it works.

BIOS is up to date. I have discovered that if I go into BIOS and then exit without saving so it restarts, it then goes into Windows fine. Going through that sequence, of course, power doesn't shut off. Does that give any more clues?

Might it be a PSU problem? Most components are three years old:
Z97X Gaming 7 mobo
i7 4790K
TeamGroup Vulcan RED 8GB (2x4GB) DDR3 PC3 memory

But the PSU is about seven years old and was a Antec TruePower New Modular 650W.

I'm baffled!

Thanks for any help.
 
It's obviously something to do with that card that's causing an issue.

Perhaps a software incompatibility or glitch.

What version of Windows do you have?
 
Maybe the monthly Windows patch messed up something? It shouldn't be a power issue for the issue to happen when Windows starts loading. Have you tried disabling fast boot if it's enabled and see if that fixes it?
 
I would suggest trying a different PSU with your system (if you have acces to one) to see if that fixes the issue. I had a similar problem with a Corsair RM650 that was 6 years old and it turned out the PSU couldn't output the required wattage anymore. A new PSU fixed my problem.
 
I'm leaning towards the Psu too, pretty sure 650w is the minimum requirement for a 1080 ti, and with it being 7 years old, it was never really built for today's tech, could be the amps on that rail struggling to meet the 1080s requirements or anything like that. get something with a bit of headroom, 850w etc.
 
Here is Guru3D's power supply recommendation:

  • Nvidia GeForce GTX 1080 Ti - On your average system the card requires you to have a 600~650 Watts power supply unit.
Looks like that's probaby your issue. Honestly thought a 650w psu would be enough but it looks like it's the bare minimum.
 
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