Downgraded from Windows 10 to 8.1 and now my graphics card doesn't work...

billydavies21

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Aug 23, 2015
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10,510
So... I bought a Sapphire R9 270x card when I was using Windows 8.1 and everything was fine. I upgraded to Windows 10 and everything was fine still for around a week, then I started getting frequent crashes. Instead of troubleshooting the problem I just decided to go back to 8.1. The downgrade went smoothly and I kept all my stuff but when the PC rebooted after the downgrade, there was no display, just "no signal" message on my screen. I restarted a couple times and nothing happened. I plugged my HDMI lead into my motherboard socket and it worked.

So now that's where I'm stuck... My onboard graphics work. My graphics card does not. It doesn't show up in device manager. I've set BIOS to use PCI-e primarily, and even turned the onboard graphics off in BIOS, I've uninstalled and reinstalled the drivers and I've even done a fresh install of Windows 8.1 and 7 (on Windows 7 currently) to try and fix it but the PC just won't detect the graphics card.

I'm going crazy. I don't know if it's windows, the BIOS, drivers or the GPU itself. Any help would be greatly appreciated!
 


I meant a clean install of the GPU drivers, not windows.
But I thought you said you were on windows 8.1, not 7 did you not?

Why can you not download individual drivers? Delete your old GPU drivers, then go here and put in your information.
http://support.amd.com/en-us/download

I've never had luck with the auto-detect utility, it's never been correct for me and others.
 

billydavies21

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Aug 23, 2015
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If you read my original post. All the details are in there... I stated I'm now on Windows 7. I stated that I've tried uninstalling and reinstalling drivers. If you go to the website you linked and put in all the details, it does not give you "R9 270x Drivers". It gives you Catalyst drivers (http://support.amd.com/en-us/download/desktop?os=Windows%207%20-%2064) which cover a range of GPUs. This is what I have. It does not work. It only thinks I have onboard graphics and installs those drivers accordingly.

Just to add. When I originally installed the GPU, it worked first time, without having to install new drivers (again, the Catalyst software covers it all). It automatically overided my onboard graphics.
 

billydavies21

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Aug 23, 2015
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10,510
Not sure about PSU. I know its 500w. Will open up the PC when I'm home and have a look. As far as removing the GPU and cables and reattaching, yes I've done that twice, cleaning the PCI socket in the process. I only have one PCIe socket, before that's suggested...