I don’t know how much you know about computers so forgive me if I am too basic.
I did some checking, the latest BIOS is 1002. The latest Video driver from Asus is 5.33a. Are you using the Asus drivers or the Detonator3 from Nvidia?
On your desktop, right click My Computer, select Properties, click the Device Manager tab. You should see a listing Display Adapters. Click the plus sign. Is your card listed there? Do you see any yellow exclamation points or red Xs?
Next click Computer at the top of the list to highlight it then click properties. This will bring up your IRQ listing. Find the graphics card, it should be using IRQ 11. If not, what is using IRQ 11.
In the BIOS, your settings should be:
AGP Compatibility [4X Mode]
Graphics Aperture Size half your system’s RAM
VGA BIOS Sequence [AGP/PCI]
Under PCI/PNP ISA IRQ Resource Exclusion all should be set to [No/ICU] unless you specifically set something.
Your video card should get properly identified otherwise your system will probably not be stable. As for the suspend feature, I have never found it stable on any computer and always disable it. I let the HD power down and the monitor turn off, but do not use the suspend function.
I hope this helps. Let me know.
James