What video card.
I'm not sure where you're hanging at but maybe trying the suggestion in this thread might help if you can get that far.
Device Manager - Access During Windows 7 Installation - Windows 7 Forums
What state is your computer in now? No operating system, partial, back to vista? Can you try the usb way to install?
Is the other (blank?) hdd formatted or have you used the install option to partition and format it? I'm just guessing here. Everything non essential unplugged and taken out of slots. Like the only things attached are the hdd, keyboard, video and mouse? Can you delete your video in device manager and just tell it to use generic vga drivers?
I would be frustrated myself. I think if I had it here to work on I could get it but it's too hard to try and tell someone all of the different things to try when you can't see it and tweek it yourself.
I have one hdd with vista installed, that's the drive I'm currently trying upgrade with.
And another hdd that I'm using to try clean installs on.
I disconnect which ever drive I'm not using.
What's the USB way? Baring in mind I have the retail disks not a downloaded iso.
I dunno, my brain hurts lolMaybe a bios setting?