It's size of my "windows" directory:
70Gb - it's very large directory.
Please, how I can cleanup it?
I have tried this methods:
The following procedure cleans up files associated with your user account. You can also use Disk Cleanup to clean up all the files on your computer.
1- Open Disk Cleanup by clicking the Start button Picture of the Start button. In the search box, type Disk Cleanup, and then, in the list of results, click Disk Cleanup.
2- In the Drives list, click the hard disk drive that you want to clean up, and then click OK.
3- In the Disk Cleanup dialog box, on the Disk Cleanup tab, select the check boxes for the file types that you want to delete, and then click OK.
4- In the message that appears, click Delete files.