Has my PSU fried my GPU?

mattd77 · 24 Apr 2018 at 19:10

Hi, everyone.

I have searched the internet and have raised tickets with Corsair and HP but I've not had a lot of success, I ended up here because I bought the PSU from Overclockers and their support page suggests posting on the forum. So here goes.

I am running an HP Omen Accelerator with a GTX1080, a Firecuda, and a keyboard, mouse and monitor attached. I was getting messages suggesting I use a more powerful PSU - the stock one that came with the Omen is 300w - so I bought a Corsair SF600.

Installation seemed pretty straightforward, but when I turned it on I got a half second of power and then nothing. I checked all connections (a 24-pin to the mobo and two 6+2s to the GPU) and all looked good. I couldn't work out what was wrong. So I undid it all and reinstalled the old PSU and now the same thing happens there - power for an instant and then nothing.

I did the paperclip test and both PSUs appear to be working fine.

Can anyone help? Have I done something silly? Is it possible I have damaged my mobo and/or GPU?

Any help you can offer will be greatly appreciated.

Matt

mattd77 · 24 Apr 2018 at 20:22

Hi, both. Thanks for your replies.

Yes, I am using it as a standalone and connecting my HP Spectre 360 via Thunderbolt 3. Worked fine for a good 6 months or so, until I decided to upgrade.

I most likely did nudge the GPU when installing but have since removed it and reseated. I have also checked the connections a bunch of times. I was hoping there was a voltage switch or the like somewhere that I had missed.

B*gger. It's not looking good, is it?

mattd77 · 24 Apr 2018 at 20:30

Right now only the GPU is connected. I have removed the hard drive and unplugged keyboard mouse and monitor. I get a flash of red light and then t shuts off. Interestingly I get the message about using a more powerful PSU for best performance. So it must recognise that there is power there.

mattd77 · 24 Apr 2018 at 20:41

I hadn't thought to check that. Unfortunately, when I reconnected the hard drive and disconnected the GPU I get the same flash of red/power and the message on my laptop screen "For full performance, connect a higher capacity power adapter." but if I look in Windows Explorer I cannot see the hard drive. Again, this was working okay before - I loaded all my Steam library onto it.

p.s. thanks so much for helping me with this

mattd77 · 24 Apr 2018 at 21:11

Well, I have an open ticket with Corsair and have bumped my forum post with HP (frustratingly I can see HP employees replying to other similar posts and then supporting via PM) so fingers crossed I'll get something back from them.