Having some issues in Windows 8 with my graphics card (ASUS ENGTX550Ti).
For some reason the video in Windows 8 comes up very corrupt whenever I use this particular GPU with the system. There are artifacts all over the screen, the image looks like it's "blinding" (having an effect similar to vertical blinds), and the mouse creates movement trails. To read anything, I have to mouse over it constantly and use the mouse trail motion to try to "clear up" the text.
I tried installing Nvidia drivers on the system but that doesn't seem to correct the problem (and, truthfully, it seems lower than that because even in Safe Mode, without any display drivers present, it still comes up jumbled and artifact-ridden). Erratically.
This card did work with Windows 7 well. My motherboard is Gigabyte GA-M61PME-S2P rev 1.0
I can let you know anything else you need to diagnose this issue. Thanks for any help you can offer.