My friend has a laptop and when he boots it up it says "NTLDR is missing" in the DOS application screen and it won't go to his desktop. He doesn't have an OS restore disk for his IBM Thinkpad and thinks when he was cleaning up his files he deleted an application he needs. He has searched online and came up empty so I told him there were some techies around here that may know what to do instead of paying Best Buy $70 just to look at it. Anybody know what to do?