First-off, my setup:
MSI X58A-GD65 mainboard
Intel Core i7 950 @ 3.07Ghz CPU
Club3D Hd 6870 1GB GDDR 5 graphic card
8GB 2000Mhz Kingston Hyper-X RAM
320GB 7200RPM Western Digital HDD (slowest part of system)
Windows 7 Home Premium 64bit
...I don't think the rest matters.
Now, the problem:
Yesterday, as I opened Internet Explorer 8 on my perfectly-working, entirely stable installation of Windows, it presented me with the option to upgrade to Internet Explorer 9. I opted to do so. Once finished, it required a reboot. So I let it restart my PC.
It couldn't boot. Right after it said "Starting Windows", it switched to a black screen with "Loading Files" or someting similar, and it tried to repair my startup. It failed in doing so about 9 times, with and without the Windows disc (which is utterly useless). I tried System Recovery on various points, no luck. Anyhoo, I ended up doing a reinstall of Windows.
Now, I notice that my graphic card is no longer picking up as being 1GB, but instead as 747MB in DxDiag. Any ideas? Please??