Hi Chris.....I'm deffo no techie, but seeing as nobody else seems to have answered, 2 things spring to mind....First, have a look in the device manager and make sure you have no yellow exclamation marks next to anything. If there is, then it's a driver issue. If not , then probably the hardware. Next is the disc, is it clean in itself...yeah? ...Then Run a GOOD cd cleaning system thru the cd drive (Sorry, Don't know of any, but they can be picked up on high street) If these 2 suggestions don't help, then it's probably beyond me.

Good Luck Matey, Mugsy