WINDOWS 8:
1. Press WINDOWS KEY+W or go to the Metro Start Screen. Search for "Disk Cleanup." Click on SETTINGS if you are on APPS. Find an icon with a green wave in a monitor.
2. Click on it. Please wait a moment while the system scans through unnecessary files. Don't worry, the Disk Cleanup will not damage your computer. Anyway, after a moment, you should see this window pop up.
3. You can check box which ones you would like to delete. I can free 1.00 MB of disk space on my drive. 1.00 is not a big size, so it's not really taking up a wide range of space. If any of the files or folders are 400+ MB or even over 1.00+ GB, then I would delete them.
[NOTE] Click "Clean up system files" for more files and folders.
4. When you select the files or folders to delete. Click OK. Windows will start permanently deleting the files from your system.
Questions you might ask:
Q: Does this work on previous Windows operating systems?
A: Yes. Vista and 7. You go to START and search for Disk Cleanup I am not sure about XP, because it's been a long time since I used that. I assume all of you have XP, Vista, or 7. Not 95, 98, ME, or 2000.
Q: Will this damage my computer?
A: No. It safely deletes your unnecessary files and folders. If you want to know more about Disk Cleanup, click "How does Disk Cleanup work?" on the Disk Cleanup window.
Q: How long will it take to remove the files from my system?
A: It depends on how large the files or folders are. Be patient.
If you bought a new computer replacing your old one that was slow and low on memory, then you can do the same procedure. Many computers have Disk Cleanup.