windows 7 probelm ! please help !

[papashango_cs]

hello
i have win 7 ultimate 64 bit
i have a 500gb hdd ,
in my C drive , the windows has been installed
when i check the properties
--------
it shows used space 23.4gb
and total space 97.5gb
free - 74.1gb
--------
but when i go inside the drive , select all the folders n files, n then check the properties, i see only 14.5 gb used !!!
rest 83gb free !
---
whats wrong ?? how to solve this ?
my other two drives dont have this problem.. they show correct data inside the drive as well as outside it.
- thanks

[Jerin]

Some space could be occupied by System Restore or Backup utility (it is your main drive).

There is nothing unusual about it. It is used by Windows and it is not missing.

Some space could be occupied by System Restore or Backup utility (it is your main drive).

There is nothing unusual about it. It is used by Windows and it is not missing.

[papashango_cs]

maybe , because i did create many restrore points n system repair things..
thanks

[pauldmps]

There are hidden & system files & folders in the drive. You need to select them also in order to get the correct statistics.

[satyamy]

their are hidden system files & folder
& also a lot of space is been occupied by System Restore

disable system restore, delete all temp file,
use "sfc /purgecache" command from command prompt
than try

[sukesh1090]

you can use tune up utilities to clean up the space used by restore points.

[papashango_cs]

thankyou all

[thetechfreak]

type %temp% in run box and delete all files there..should free up loads of space