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AMD Graphics card has vanished after HDD replacement
Hi all - first post!
I've been running the same home-built PC for a number of years and upgrading components as I go along. I was on Windows 10 with two drives, a Seagate 80GB as backup and a SSD 120GB as the main drive. Everything was great until the warning messages started to appear about my hard drive being full, and to free up space. As I couldn't free any space I opted for a bigger drive and bought a Seagate Barracuda 1TB drive. Sadly when fitted I realised I'd lost my Windows 10 upgrade so had to revert back to Windows 7.
The PC now starts and runs but the graphics is 'standard VGA graphics' rather than the Powercolor RX480 8GB d5 3dh/oc card I had installed previously. I've tried to reinstall the drivers but it tells me I have no AMD device installed; device manager doesn't see it, but yet the card fans run and the audio is apparrently running through an AMD device so it seems the audio recognises it but not the graphics.
I can't find any way to swap the graphics in the BIOS as some have suggested; there's no option appearing on the ASUS BIOS page or menu. I've been at this for three days, trying every idea, swapping the PCIE slot about (it's an ASUS PX79PRO board), checking power is getting through, but to no avail. The card is just completely invisible.
Any thoughts before it all goes out of the window? I had no trouble at all until I swapped the HDD and reverted back to Windows 7.