I recently upgraded my onboard graphics to an ATI X1300PRO PCIe, I installed the card and drivers according to the instructions and turned off the OB graphics in BIOS. I keep getting flickering lines across the display when I turn on the system when it goes into windows, I also get the flickering when I access the Catalyst menu for the card and I have also updated to the latest Catalyst driver 6.3 from ATI with no resolution of the problem. I am stumped and getting frustrated......does anyone have any help for this condition?