Download Disk Cleaner
The hard drive is, as you may already know, the storage area of your computer, where every file you download and install resides. What you might not know is that in between the files that you constantly download are also temporary files that "forget" to remove themselves after an installation is complete, for example.
Disk Cleaner does this for you: you just have to run it in order for it to scan the whole hard disk and see where are temporary files that are useless to you. Another mouse click will get you through the deletion process, a simple action that will bring back valuable free hard disk space, easing up the computer's stress, too.