Strange Problem with HDD...Please Help Me

[vineetrocks2005]

I have a strange problem with my drive...whenever I try to install a software C: and D: drive are not shown as a location where we can install the software, both drives have 6GB free space. E: and F: drive are shown which have 1GB free space.

Similar thing happens with WMP. I can't open C: and D: drive. E: and F: drives open without any problem.

Please help ASAP

Thank You

[rhitwick]

What exactly happens?
Do the drives not at all show or u get some error when u click that particular drives?

R u able to access the drives normally?

Run chkdsk in both the drives and check for bad-sectors.
(Run chkdsk in Fix mode.)