I want to replace the graphics card in an eMachines T6524. The computer seems to be trying to boot, but I have no display and assume the integrated graphics chip has failed. I have an ATI Radeon X600 SE 138 MB PCIe DVI Video card that I would like to use. Is it compatible with the T6524? In order to replace the on-board VGA card [ATI Radeon® Xpress 200 (PCI-Express®)], I need to go into the bios ad disable the on-board chip and enable the PCI VGA card. How can I do this with no video. Catch 22? Toxey.