Hoping I'm posting this in the right section. I recently got my laptop back from repair and they replaced the hard drive for reasons unbeknownst to me when I said it was the fan making noise. Anyway, I noticed that they've given me the wrong OS, Windows XP Media Center 2002 instead of 2005. I checked the sheet they sent and it said they updated the bios as well. Now I have my original rescue disks made from the '05 OS. Can I simply do a reinstall off my rescue disks or do I need to contact the repair center to get my system updated to the correct OS? I'm not that computer savvy that I know whether that bios update could wreak havoc with the '05 system.