I can help you through your crashes. Are you using a Windows operating system? When you crash, do you received a Blue Screen?

i use windows 7. Its not as much of a crash as it is just the monitors cuting to black (allongside everything ellse) at random.
The computer does not make any specific noise it just flutters on, but there is no sign of things actually working behind the black screen (audio etc)

Right now im trying to figure out if the monitors are actually the problem. but if its not i might suspect dust.....

I am an IT tech; so if you want to talk about why, i can see about helping to fix it.

ah! :D!!! id really apreciate that

Well, I was gonna' say something useful, but these guys are already on it. :P