I always get this error message when I access my D: partition. It say Error in Window Explorer the program must be close. Send error.

Quite annoying and I am afraid I might loose my data although I have done regular back up. Is there anything I can do to solve this.

Appreciate to anyone who can help.

Have you tried to access in safe mode?
Have you tried Right click, Explore?
If you are still having trouble, download UBCD and run that.

Right click the drive and under properties->tools->error checking, run a full scan (may need to reboot. will take a while). Does that help?