If you're running out of space on your hard drive on a Windows PC, try running Disk Cleanup. To run it, right click on your C drive in Windows Explorer and select 'Properties'.
Click on the Disk Cleanup button and Windows will automatically calculate how much space can be saved by removing several different types of files.
It is safe to remove most of these files, but do not select the option for Windows ESD installation files. You will need these to return your PC to its factory settings.
You can safely remove temporary internet files; .tmp files; thumbnails; windows update files and archived error reports. After you click on the option for 'Clean up system files', Windows will make additional calculations. At this point clicking on 'OK' will clean up your hard drive.