Who is your laptop manufacturer?
What are your computer specifications?
Have you tried a factory restore?
Have you created a set of recovery discs?
You say you've tried everything. What exactly have you tried?
What exactly are the sort of problems you've been having?
The more information you can give us the more we can help you, but based on what you've told us so far is like asking someone what their problem is after they've jumped off the Golden Gate bridge!