Hassle Free Computer Maintenance

Ever heard any one complaining about their computer?
My computer is too slow.
It takes too much time to start up or shut down.
My internet is getting slower and slower.
Too many unwanted applications running
Some of my applications just don’t work.
My PC shuts down randomly.
My Browser sometimes gets stuck for ages.
I get too many pop up windows when I go to some web sites .
I think my computer has some real problems.
Is there any place where I can get my computer maintained under $10 per service?