Solved 9Gb suddenly wasted in main drive.

[ImRocketMan]

Sorry for the title.
The fact is this: until this morning (or maybe last night), I had more than 10Gb free on main drive where I have also OS (C drive), but some minutes ago I saw that now the free space is only a few more than 1Gb.
What's happened? I haven't installed anything, only a game on another drive (Alien: Colonial Marines).
Malwarebytes Antimalware doesn't found anything, and CCLeaner says that I can free only 500mb.

I have Win7 x64 with latest updates.

 

[ImRocketMan]

Ok, solved. I have accidentally recorded a 10Gb video with Fraps Only to find a key for quick saves and quick loads.

 

[whs]

Do these 2 steps:

1. Run this program and see what uses the space: WinDirStat - Windows Directory Statistics If you cannot decypher it, post a picture of the output.

2. Open an elevated command prompt and run this command

vssadmin list shadowstorage

That will show how much space is used by restore points. Look under Allocated. (those do not show in the program under 1.)