Computer won't display anything

[Brumboy]

Hi there,

Literally just tried to turn on my computer as normal and it beeps 4 times and nothing happens on screen. The hard drive sounds normal but there is nothing displayed on the monitor. I've turned it off/on a few times and nothing happens!

Any idea what's happened? It was working fine about 3 hours ago

 

[Brumboy]

Monitor works fine with other devices. I've unplugged all the cables a few times and still I get the beeping noises.

1 long beep
3 short beeps

But now I'm getting another short beep after!?

It could be a VGA issue according to the manual but not 100% sure. Guess I'll have to take it to a computer store then ;\