OK. Here's what I've experienced and learned so far. Am running an HP with NVIDIA 7900 GT/GTO card. Upgraded (clean install) from XP to Windows 7. Installation finished 99.99%. Crashed. Flickering screen. Restarted. Said all was ok. Started using PC. Tried to view a graphic. Crashed. Flickering blue screen. No error message. Just blue. After troubleshooting with MS for hours, they said I needed to disable the NVIDIA card and tell HP I needed an updated driver
(was using the new ones like you). HP said, tough luck. Pay us 99$ for a driver. I told them that was silly.
Next I uninstalled the card, rebooted and searched windows updates. It found an ATI driver and installed it. PC worked fine with better graphics than the giant icons on my screen after removing the nvidia card (vga mode). BUT, went to view graphics and they looked terrible. SO..
Put card back IN machine. Did NOT install Windows 7 drivers
for it. Then discovered I could change the default viewer from Windows 7 photo viewer (new default) to photoshop. Now it works fine. Have the card in, minus new driver...it is using whatever default is built in as an alternative. Again, try changing your default photo viewer from Windows 7 photo viewer to something else like photoshop. For me this temp workaround is doing the trick. There is obviously a problem with the NVIDIA card, Windows 7 default photo viewer, and the drivers out there. Hope this helps.