1) Uninstall Unnecessary Programs, Software. This Include Programs You Are Not Using Anymore Or Dead Programs, Software (Trial Period Expired). Do Not Delete Folder Of That Program Go To Control Panel And Uninstall Properly.
2) Keep Hard Disk Atleast 15% Empty. (All Drives Individually).
3) Empty Recycle Bin.
4) Many Junk Files Are Created On PC, To Delete Those Files Use Tine N Useful Softwares Like Cleanup. To Download Click Here.
5) Use CCleaner To Delete Cookies And Other Browser Related Data Like History, Auto Form Fill Data etc. You Can Also Clean Registry Using This Software. Click Here To Download.
6) Do Not Keep Programs On Startup. Many Programs By-default Starts When OS Boot. Remove Them Using Task Manager. To Start Task Manager Press Ctrl + Alt + Delete.
7) Use Antivirus Program. Periodically Update Antivirus And Perform System Scan. Click Here For Free Antivirus Softwares.
8) Do Not Keep Removable Drive Setting As AutoRun. Virus Can Run Easily If Autorun Is Enabled. Do Not Even Open Pen Drive Before Scanning.
9) Use Hard Disk Defragmentation Service. Click Here To Know More About Defragmentation.
10) Enjoy....
Chintan Chhadva
