Broken mobo?

[Going to Cali]

Just had a call from my Dad. They cleaned the cpu HSF today and then when they started the computer, nothing happned. They've tried another monitor/gfx card but neither worked. When the computer is started, all the fans start and the hard-drive starts up but there's no signal on screen. There are no beebs coming from the mobo. I'm thinking it's a fried mobo due to static but is there any way of telling?

Asus p4p800s
pentium 4 478 2.8ghz
512mb ram
9800pro