A friend of mine asked me to look at his laptop for him. It boots, but before windows starts a lovely blue screen comes up with a fatal error message. I can get into the BIOS to change the boot sequence to reformat. But my question is....This laptop has an XP product key on it for XP pro. I have discs for XP home, XP Office, and XP Media Center. If I reformat with Home/Office/Media Center can I use the product key from that laptop for XP Pro? Or do I need to reformat with Pro. Thanks in advance.