Hey I have a Acer aspire A20 with windows 2002 Home Ed. I few weeks ago the sound started for break up and now it does not play and itunes youtube or cds. I was told by a tech it sounds like a software problem and I would need to put in the cd for xp and make it factory again. Problem is I never got the cd in the box. So can I get one or I need to buy a cd.