Have a EQS mobo with a 9550 graphics card on the agp. put a new SAMSUNG SP2504C HDD in and used old HDD as a spare. both are SATA. installed XP and it has been reunning fine for about 6 months. recently had issues with windows installer which keeps coming up with error. tried reloading and restarting etc butno luck so decided to reinstall XP. when using OS disk it goes through blue screen loads ok and asks what i want to do. no matter what i choose (install or reinstall) it comes back with a "can't find hard drive" error. I can see the HDD on everything and all the devices etc see it in windows. on the BIOS i have updated and can't find anything about SATA drives. help!