Ok... it can't bypass BIOS. When you turn it on, hit delete (not backspace) continually, even prior seeing anything on screen. I've had computers that went very fast through the boot process. Also, does it beep at you at all during boot?
I'm suprised at the lack of a switch there... then again I don't really trust PC World
. By the way, I just bought a 500W PSU that's working great for £11. I don't mean to make you feel bad... just saying PCWorld are not cheap or generally great.