No signal input...?

[Badger_grr]

Ok guys, time for you to shine before I pay 30 quid for a diagnostic at the local pc shop.

Basically when my pc is turned on the monitor says no signal input however the monitor is fine as I tried it on a laptop.

I then though maybe it's the gfx card but even when i changed to onboard it did the same. Does this mean its most likely a motherboard or psu problem?

Any help is appreciated.

 

[Badger_grr]

yes fans and what not start whizzing etc, just no screen image.

psu is a corsair 520w
motherboard is abit F-I90

considering the decency of the psu and many stories of the abit boards failing i spose it's more likely to be the motherboard.