Sometimes when I reboot, and the PC get's itself to the desktop/welcome scree, I get blue vertical lines running from top to bottom of screen, in various locations across the screen. They're like very narrow barcodes and seem to have a different pattern each time they occur.
A reboot usually resolves the problem, but I've had the issue since the card was new.
Any ideas? I've tried many different drivers, so I don't believe it to be a driver issue, and have also recently refortmatted, and reinstalled everything, but the problem persists.