If computer related problems could be fixed with the pressing of a button then forums like this wouldn't exist.
Computers are a complex marriage of varying hardware and complicated software, there could be a million reasons why you are experiencing this problem.
You can't expect us to fix your problem based on the information you provided.
Would you call a mechanic and ask him to tell you why your car won't start without suppling any details??
So, how can you expect a computer to be any different?

There is no quick-fix, a problem needs to be properly diagnosed before we, or anyone else for that matter, can offer you any useful advice on how to fix said problem.
Also, we do this for free on our own time with no benefit other than the satisfaction of helping people, so a little courtesy would be nice, we are people too.
You can't honestly expect help from people with posts like that.