Cheers for that mate.
The case is well vented and the noise seems to be comming from the processor fan even when i take off the side panel it still carries on. I think it's the cpu the graphics card fan seems ok, i don't overclock and when i aim a little house cooling fan directly at the processors no problem hasn't jamed or frozen or skiped all day and my kids have been playing a high graphic game all day. (that i only tried today)
Thanks again for taking the time on this.