Thank you, no I do not open Windows Explorer.
Windows Explorer opens by itself. As soon as I boot the computer and Windows Explorer (not IE) starts popping up all over the place. Every 20 to 30 seconds opens new Windows Explorer by itself.
I rescanned the system with AVG, still no viruses or what so ever where found.
Will booting from Windows 7 DVD and repairing the installation fix any problems without losing installed programs or data?
First open Msconfig in the Start. Look under the strtup tab and see if you have anything called Windows explorer running there. If so , untick it. But I am not optimistic that it will solve you problem.
Your question. Repairing will not destroy your private data or programs.