109 GB of data in C drive untraceable

[amanmani]

Hi guys

I am running windows 7 home basic x64. I have C drive of 490 GB of which majority are of data is consumed by Games, today only I noticed that only 10 GB of free space was availablein C drive; so I uninstalled Shadows of Mordor which freed up almost 50 GB more, after a few hours I noticed that again only 23 GB of free space was available even though in between i did not install or download anything new in C drive (apart from regular windows update which was running in background). Many of others who were facing similar problem were suggested to install WinDirStat software for analysis but that didn't clarify problem either. However I am posting data available to me, so guys please help me.

C Drive Capacity 490 GB
Currently Free Space 22.8 GB
So, Consumed Space should be 467.2GB (490-22.8)
All folders and file propoerties show 350 GB
WinDirStat shows 358 GB (screenshot attached)

Untraceable data 109.2GB (490-22.8-358)

Please instruct how to proceed.

Update:- I have already used CCleaner and disk cleanup

 

[ignatzatsonic]

TreeSize Free - Quickly Scan Directory Sizes and Find Space Hogs

Try Tree Size Free instead of WinDirStat.

It might give you more info or make it clearer to understand.

 

[Ztruker]

Also expand Games as it looks like that's where all the space has gone.