Interrupts???

Sevenfold, It could be your second video card, or any other card in your system. AGP was created to: 1) Provide more video bandwidth 2) Remove video bandwidth from the PCI bus You're solution to the problem is the correct one, using a dual head video adapter. If you'd like to post your current IRQ settings, then we could look at whether you're havign any other interrupt based interactions. Cheers, Mark