[F]Every time I re-boot a black screen comes up and the message reads as follows: Drive 5 in your operating system is missing. Please advise. Thank You

[F]Every time i re-boot a black screen comes up and the message reads as follows: Drive 5 in your operating system is missing. Please advise. Thank You
How do you totally remove all of the Hidden Files in your system (Windows XP)? Also, how does one see the Hidden Files in the system and know which ones should be removed? Please advise, Thank You.