I upgraded from my my trial version to the commercial version. I did one computer last night, the other today. Using Blackspears settings for beginners. The computer I did today is not working. I have now installed NOD32 twice with the same results each time. I can't seem to get NOD to scan my hard drives. Every time I try, the scan only takes a minute or so and I get the following: Scan performed at: 12/11/2005 15:35:14 PM Scanning Log NOD32 version 1.1318 (20051211) NT Command line: /local /adware /ah /all /arch+ /clean /cleanmode /delete /heur+ /log+ /mailbox+ /ntfs+ /pack+ /quarantine /scanboot+ /scanmbr+ /scanmem+ /scroll+ /sfx+ /unsafe /wrap+ Operating memory - is OK MBR sector of the 2. physical disk - Error reading disk sector MBR sector of the 3. physical disk - Error reading disk sector MBR sector of the 4. physical disk - Error reading disk sector Date: 11.12.2005 Time: 15:35:16 Scanned disks, folders and files: C:; D: I set up my other computer identically and am not having problems. Suggestions?