i have a bad sector in one of my drives is there any way or program to solve the problem without loosing data

Answer 1

Hello dear
Run scan disk from Run line it can recognize bad sector also some software can hale them like "system mechanic 6"
Good luck

Answer 2

With WindowsXP:

Open My Computer
right-click on C:
choose Properties
cl Tools

Run an error check and select to try to fix errors.
Then, run a defrag.

This may (underline may) help.