I've got a pecular problem. I am building a media center out of an old HP, I installed a new video card (MSI R4350-MD512H), and I had everything working fine under Vista Home premium. I recently upgraded to Windows 7 Professional (custom upgrade) and this happened:
Windows cannot see the PCI-Ex16 graphics card, only the default display adaptor will appear in the device manager. I reinstalled the drivers, but nothing happened.
To see what would happen I went into the BIOS, changed the video from PCI-Ex16 to onboard, plugged the monitor into the onboard VGA port, and restarted. Amazingly now windows can see (and think's it is using) the new video card.
Video only comes out of the card set in the bios.
Any suggestions, is there something I'm missing? You can seem my other system specs in my profile