I have windows 2000 pro with im guessing sp3 and here is my problem i installed "daemon" program which allows me to load ISO files well it prompted me to restart the computer will go pass the Windows loading up screen then will restart, it will never reach the log on screen i can access my computer through safe mode i purchased my computer through a small shop, and i realized they did not include a Windows 2000 CD. I will contact them tommorow but here are my questions. 1. Simply what may be wrong? Virus..i dont think so I did a full system scan and found only two viruses and they were deleted using Zone Alarm Security Suite 2. Will I be able to reinstall or attempt to fix this without reformating 3. In safe mode, Can I backup files to a CDR 4. Can i upgrade to Windows XP instead of reinstalling all of this?