Hey,
Thanks for getting back so quick. I tried your idea, i touched the case against a radiator, opened it up, took the battery out and moved the jumper. I did this for about 10 mins, wasnt sure if time would play a big factor. What does this actually do?? im not an expert really, i did a bit of reading on the subject and came to the conclusion it was related to overclocking, but im not too sure.
Anyway.... no luck

when i turn the switch off on the power supply and back on again the LED on the motherboard comes on, then i press the on button to start up the PC the fan jerks slightly and i hear a click sound. Not sure if this is the PSU or the fan itself.
What i did next was to get a multi-meter and test the plugs which go into my HD's etc, and this showed 0 volts!!!! but im not sure i was testing the right pins. But this confuses me as the LED has some power and there's some power jerking the fan.
Next i opened up the power supply and looked for any obvious faults, and..... nothing.
I couldnt get hold of a power supply, so just want to know what you think before shelling out money for no reason.
Sorry to rabbit on but this is pissing me off. Your help is much appreciated
cheers