Well i have a Ati Hd4870Dark knight Made by Asus. While i was overclocking my Card i Moved one line all the way to the right Witch Means Maximum. Know for some reason My screen just shows Colorful Boxes or lines I cant explain it. Hard to explain But now it Just crashes. any ideas On how to fix this?
If you were using a tool like Rivatuner to overclock then do this;
Boot into Safe Mode (hold the F8 key down until you see the selection screen) and select Safe Mode. Wait for the system to boot then uninstall the software compleately.
If you were overclocking using the drivers boot into Safe Mode and uninstall them compleatly.
Reboot normally and reinstall the software/drivers as needed.
By booting into Safe Mode, the VGA drivers are not loaded and your card will run using the Windows drivers, which are very basic and will not be effected by your overclock.
With that done, you can now safely uninstall your drivers or the software you were using for the overclock, which should end the problem.