Hi, I'm a computer noob. I have a 12 year old retail-purchased PC that came with WinXP Home pre-installed on the 160GB hard drive. The original OEM hard drive squeals terribly loud and sounds like it's going to die. I'd like to replace it, but not sure how to get WinXP installed on a fresh hard drive (that doesn't contain any OS software). I don't have any Recovery discs, but I do have in my possession a copy of WinXP Professional Corp Edition (with a registration key) that I inherited from an old co-worker. I'm having issues getting this WinXP cd installed onto a new hard drive. I took out the bad/dying drive and put in the fresh hard drive without any OS software installed on it. I made sure the jumpers were set to master on this new hard drive. I've gone into the BIOS numerous times and carefully configured boot sequence so the CD player boots first yet, I keep getting the following error message "Insert Boot media in selected Boot device and press a Key". I know the cd works, because I was able to launch it when the PC was configured with the bad/dying drive running in a normal working Windows environment. I'm beginning to wonder if the cd is designed as an "Upgrade" version, rather than a "Full" version, thus requiring an earlier version of Windows to exist on the hard drive. I honestly don't know since the disc was given to me years ago by a co-worker. I also know the boot sequence is correct because I was able to get the cd drive to launch my genuine 64 bit Win7 OS software cd that I own for a different PC. Naturally I got error messages preventing Win7 from installing, but at least the cd drive recognized the cd. So, what am I doing wrong? Anyway, I'm at a loss to what to do and now scouring Ebay for "full" versions of Windows XP Home for purchase. Btw, I have no desire to upgrade to any other Windows OS for this PC. I just want WinXP installed on a new hard drive, so I can run music software built for the XP platform. Thanks!