BEEP BEEP BEEP.......NOTHING HAPPENS.

[TURIN]

Help Please.

We are having some building work done at home and this afternoon while I was out, the electrician told Mrs T the power needs to go off.

For some bizarre reason, realising the home theatre PC was on, she pressed the sleep button on the remote and then just hit the 'off' button for 5 seconds until it went off!

Now, I come home from work and.... "Er, the PC won't restart, it just beeps".

Great!

So, I have spent a couple of hours trying to fix the damn thing, here's the symptoms.
On power up, the LED lights up, the monitor (TV) goes to black screen, the fans run, the DVD drive runs, screen then goes to 'no signal' mode and the machine beeps repeatedly, no pattern.

I can't get into the bios by pressing F1, F8 or F10. Nothing.

OS is Windows 7.

Gigabyte Motherboard
ACE 400X PSU


I've removed and reseated the RAM and checked all the leads are connected to hard drives etc.

I've searched the google world and a few old threads on here.

PSU or motherboard blown perhaps?

Any advice to aid troubleshooting appreciated.