Why is my computer bein retarded even though it has 77% free space? SAVE ME!!!?

Answer 1

Check for spyware and viruses...also make sure you have enough RAM (open Task Manager and go to the Performance tab and look at your Available Physical Memory).

Spyware Tools:
http://www.lavasoft.nu/software/adaware/
http://www.safer-networking.org
http://www.microsoft.com/windowsdefender
http://www.merijn.org/programs.php

Anti-Virus:
http://free.grisoft.com

Cleanup:
http://www.ccleaner.com