So my computer has been slightly dodgy recently when you turn it off because when you turn it on sometimes the monitor says there's no signal and it just sits there on standby even though the computer seems alive and well - hard drive noises lights on keyboard etc etc. Anyway now it seems to have completely given up the ghost. the monitor will just not detect any signal from it at all. I've tried a different monitor and it still doesn't work (CRT and flatscreen) I've plugged in an older computer to see whether its the lead I'm using (it isn't) I'm guessing this is a graphics card problem. my computer is: Intel Q6600 2.4ghz Ati x1900xtx 512 PCI-E 2 gb ram Asus P5B-VM SE motherboard. Any ideas what to do?