My PC monitor has stopped working

I have recently cleared my pc of dust and what not. There was no possible way it could have been effected by a static charge however my monitor will no longer work, it justs stays on the orange standby light. It did work previous to this. I have tried other monitors with my PC and they dont work either so it is a problem with the system itself, can anybody tell me what has happened and how i may sort it? Thanks

Is it plugged into a graphics card or the motherboard chip? Maybe your graphics card just died, or that your motherboard chip got damaged.