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You are already being helped here: PCI.sys Blue Screen Of Death On Shutdown/Restart - Tech Support Guy Forums and Here: PCI.sys Blue Screen Of Death On Shutdown/Restart - CNET Windows XP ForumsGraphics Card: ASUS EAHD6540 Series (1024MB)
Asus, makes motherboards but they do not make Graphics Processor Unit cards (video cards) according to their web site. Who is the manufacturer of your GPU?
Go to the manufacturers support/download drivers and type in your model # of your new GPU and download the updated driver for it.