SIR ,
i have myn own pc and i am unable to maintain it proprely
it runs very slowly plz sugest some comments for the same.

This is a very common problem, solution can be easy. First see this article I posted on eTI .
How to Boot Computer Faster

Also, install a proper antivirus software, also use ccleaner to remove unwanted stuff from your computer. I hope, following my advice properly will significantly improve performance of your computer.