Can't access a directory on C, windows wants to reformat

[gf4200isdabest]

WindowsXP can't access a directory. Says that disk in drive C isn't formated, would you like to format. Inside the directory is an install of PowerDVD. Dos doesn't like it either:

C:\Program Files\commanappz>rmdir powerdvd
Data error (cyclic redundancy check).

C:\Program Files\commanappz>chdir powerdvd

C:\Program Files\commanappz\powerdvd>dir
Volume in drive C is OS
Volume Serial Number is F43A-F626

Directory of C:\Program Files\commanappz\powerdvd

File Not Found

C:\Program Files\commanappz\powerdvd>

How do I fix this? At this point i'd even settle for "how do i remove it without formatting my C drive?

 

[DannyBoy]

Think you will find the drive is a gonner mate

 

[fr]

Try Scandisk/Disk Checkup yet?