Why did not my C disk loading what disk almost full, reflecting the slow good

If the title

you should download the size of the disk C, N or more patches, they will be able to delete the desktop The major also delete the file systems and processes than to take the information and not to download the C disk.
Necessary clean-up disk, open the System Restore arbitrary cancellation of the disk, click Tools – Folder option – view – show all Files and folders in front of the check will be C:\ window, under any folders in front with “$” symbols can be deleted, which is updated automatically generated junk files.
During software installation can choose to install Other letter, such as D, E or F in an arbitrary, so the disk space occupied by C would be a very small.