GPU not being detected, says drivers are installed.  

Hello there.

As I've reinstalled windows on my computer since my previous SSD broke earlier, I have failed to make the GPU work properly.

It's a Sapphire radeon HD 7970. I tried installing the drivers off the included disk initially, to no avail. It wouldn't work. I then tried getting them off AMD's website and the installer program says I've already got the latest drivers. However, it still won't appear in the device manager and I've found no sign at all that the computer even knows it exists.

The video output cable is connected via the graphics card, though, so I can't imagine it being broken, seeing as I do have the output displayed on my monitor.



What do?

Hutler try right clicking the unknown devices and video controller in device manager and click uninstall. Then reboot and try again. If you have another type cable for a different port on you card try that too.

Hulter said:

Hello there.

As I've reinstalled windows on my computer since my previous SSD broke earlier, I have failed to make the GPU work properly.

It's a Sapphire radeon HD 7970. I tried installing the drivers off the included disk initially, to no avail. It wouldn't work. I then tried getting them off AMD's website and the installer program says I've already got the latest drivers. However, it still won't appear in the device manager and I've found no sign at all that the computer even knows it exists.

The video output cable is connected via the graphics card, though, so I can't imagine it being broken, seeing as I do have the output displayed on my monitor.



What do?

I see a warning by the Video controller in the screen shot. Have you installed all the motherboard drivers since you reinstalled Windows?

Edit: Welcome to the forums by the way:)

Paul would doing as I said by removing the video controller allow windows to reinstall or should he go to the board site first?

Dude said:

Paul would doing as I said by removing the video controller allow windows to reinstall or should he go to the board site first?

Not too sure Doug, really need to establish if he installed all the motherboard drivers after the reinstall, as you know this is one of the first things you should do followed by Windows updates etc.

Correct you are Paul, Hulter use the update your specs link in my sig to upload your specs so we can get your specs and ID the proper drivers for you

Yeah, cheers. Great to be here.

But, uhm, I do believe I have reinstalled all the necessary motherboard drivers. It's some ASrock one, btw, just in case that matters.

I'll go check if I ever installed the VGA driver and see if that helps. I thought that was for integrated graphics, which is what my computer should currently be running, since the GPU isn't being used. Not sure. BRB.

I'll get right about to posting the whole component list in just a moment, too.

Edit: Ok, so I installed the Onboard VGA driver off the ASrock disk and this is what shows up in the device manager now.



It seems the warning sign by the graphics controller line was indeed pertaining to missing drivers for the integrated CPU graphics, because it went from showing that this intel graphics rubbish.

I hope noone will hunt me down and kill me, or what have you, for this, but I'm using an unauthentic copy of windows, so I'm not too keen on doing the windows update business. Last time I did it it gave me loads of rubbish about the authentication that was pretty difficult to get rid of.

Just as a disclaimer, I do have a windows 8 license that I could use but refrain from as I've only heard and experienced rather unappealing and undesirable changes and things about it, which is why I'm using Windows 7. Seems to me it's fair enough.

But I could of course go through the windows update process again. Do you think it might help?

Actually if you can find out the model of your Motherboard that would be helpful.

Funnily enough, I have an Asrock Extreme 4, and when I first got my 7970 I had the exact same problem as you, it would not find the GPU. I did a lot of looking around on the web, and found a fair few people with my board had the same problem and a bios reset cured it, my motherboard has a "clear CMOS" button on the back, I pressed that, it rebooted and found it straight away, I was very relieved. Obviously I had to manually re-enter my bios settings after but it worked fine from then on.