Space on hard drive disappearing windows 7

[boppssmith]

Hello,
I am running windows 7. on my hdd i have two partitions. both work fine except when i view the space used on partition D: it shows i have used up 178 gig when windirstat only show i have used 124 gig. please can somebody help me find the other 50 or so gig

 

[sminlal]

Check the recycle bin for all accounts on the system, as well as system restore. You can check system restore as follows:

- Start -> right-click "Computer" and select "Properties"

- Click the "System Protection" link in the left pane

- Under "Protection settings" click on the "D:" drive to highlight it and then click "Configure..."

The resulting dialogue box will show you how much space is being taken up by restore points and give you a slider to adjust the maximum amount that the system will use.