1.DEFRAGMENT YOUR HARDDISK.

You should defragment your harddisk .Defragging your harddisk takes your data together so that it can be easily accessed. In olden days your computer was blazing fast because it has few data that is written to nice chunks.After prolonged use data gets scattered and thus defragging helps to make them close to each other speeding your laptop.

2.CLEAN JUNK FILES .

Clearing unnecessary files help speeding up your computer .Empty your recycle bin ,clear your temp directory and wipe out other junk files from your laptop.CCleaner for Windows is a good ,little tool takes takes all the pain of making your computer faster.It is a free tool which can be downloaded from here.

3.REMOVE SPYWARE AND ADWARE

Spywares and adwares are the real speed busters of your computer .Completely eliminating them will help speeding up your computer .Personally  I  prefer using free softwares like Ad-Aware by Lavasoft and Spybot – Search and Destroy.

4.REPAIR YOUR REGISTRY

Registry optimization is an important factor in increasing the  speed of your computer.The tool I already mentioned CCleaner is capable of doing it.

If you are looking for some cool free windows applications you can find them here.