I'm not sure what the problem(s) is :/

[Carbon Dudeoxide]

Perhaps the computer isn't getting enough electricity/too much electricity. Possibly from a broken componant or circut.

[patio]

OK then I don't have anything I can try.

Could there be anything else wrong with it that is causing these problems?

If not then what would you guess at the cause being?
I'd like to know if it's worth buying a new CPU or motherboard at this stage.

EDIT ~ I'm not sure if it's relevent but I have gotten mild electric shocks off the back of my computer, mainly the USB ports and recently the speakers (though it happens only rarely). Maybe that might mean something 

Thanks.

A new quality brand PSU is alot cheaper than a new MBoard and CPU...

[Raptor]

Electric shocks but the result of an ungrounded power outlet. Did you recently build this PC?

[Slicx]

Electric shocks but the result of an ungrounded power outlet. Did you recently build this PC?

Not that recently, it was bought in parts and assembled by my Brother-In-Law about 1 and a half years ago.

A new quality brand PSU is alot cheaper than a new MBoard and CPU...

I really woundn't like to buy either unless you guys are certain one of them is faulty. 

Thanks as always

[patio]

Can you borrow a known good PSU for a few days to see if this is the issue ? ?

[Raptor]

You really need to test another PSU on your machine.

[Slicx]

Ok I'll try to find another one, I have a few contacts to pester.

I'll post again when I've tested another and if that mucks up as well.

Thanks for the help to date.

[patio]

I would also make sure it is of the same wattage as the one you have or greater or else the test will be inconclusive...