My 40 gig burped then chkdsk deleted EVERYTHING. I'm assuming the 40 gig drive was the root of the problem an want to replace it with a Seagate 160 gig but have concerns about war stories I've read in various forums about doing this. Are any of these true? 1. Is there something called a "STAMP" on the eMachine motherboard that prevents installation of any hard drive that isn't purchased from eMachine? 2. The restore CD for the 40 gig eMachine won't work on the new 160 gig upgrade? I've even heard that it can't even be done with a brand new Windows XP SP2 home installation. What gives? I've heard some horrible stories about upgrading eMachine laptop hard drives. I'm searching info before buying the new Seagate 160 gig drive.