I bet, that your CD/DVD-ROM drive is a S-ATA connected one. Some S-ATA optical drives don't like to run in AHCI or RAID mode, especially not during any OS installation.Suggestion: Borrow an IDE CD/DVD-ROM drive and connect it to an IDE port of your notebook. Once XP is successfully installed, you may try to reconnect your currently running S-ATA optical drive. Hi there, I'm facing the exact same problem. Now its going in continuous reboot loop. I cant fix boot manager menu using system recovery disc came with laptop. Its asking me to go back to factory setup..... What should I do? Please help...... I boot using XP CD and repair and run fixMBR and FIXboot but still no help... How to borrow IDE CD/DVD ROM? can I try to install it using USB CD/DVD ROM? will that work?