Computer won't wake up

[Curio]

Heh - just realized the title is quite sad

So for some reason my computer has decided to stop coming out of standby mode. I have changed absolutely nothing. The fans all spin up, the hard disk light goes nuts for a few seconds, but the monitor stays off. I have to reset the machine.

Any ideas?

 

[gillywibble]

Corrupt RAM?

What apps are running?

 

[Curio]

UPDATE

Turns out it was early symptoms of a faulty PSU. Soon after that the machine wouldn't even turn on anymore. Funny thing is that the wife had exactly the same PSU (460W X-Clio) in her machine and it did exactly the same thing a few months ago - I just didn't connect the waking up problem with the PSU.

Anyway, both replaced with Antec - both working great.