A few more things to look at:
1. When you push the power button, do you get any beeps?
2. Did anything unusually happen around your house or computer recently? Such as: thunderstorm, blackout, dimming lights, etc.
That's hard to say: you really have to work on the diagnosis first.
1. Can you boot from a boot CD or (if you have one of these drives) a boot floppy?
2. Can you get into your BIOS settings screen? If so, does everything look okay--in...
Turn off SSID--this should stop 99% of unauthorized users (the casual freeloaders, basically). And shouldn't effect the legitimate users--no password required for this simple step.
Do this until you/she gets official permission for the...
Plug-in engine-control computer--to adjust spark curves, fuel-air ratios, etc. (high-performance car stuff, in other words).
Driving a USB-powered digitial storage oscilloscope and logic analyzer.
Plus all the mundane stuff like...
Sorry Sophie, this is out of my experience: maybe exabyte will be able to answer.
I "will" say this, however: according to the Wiki DVI article, 1920x1200@60 Hz is single-link DVI. Thus, the card should be able to handle it.