and Junkware Removal Tool
to remove junk.
Disable unneeded startup programs (I use CCleaner
for that). Be careful not to disable important Windows processes.
Run a scan with your antivirus to ensure that there is nothing lurking on your system and using up resources.
Defragment your hard drive - my choice is Defraggler
. Don't do it if you are using a SSD though.
Edit: Tips for cleaning up a slow computer can be found here
. If you need any specialized help then please post in the Am I Infected section - the staff there are better equipped to deal with things better than I am.
Edited by Alexstrasza, 07 December 2014 - 04:08 PM.