The first and most important thing to do is to back up and save somewhere safe any data on the laptop that you wish to keep. Do it now, before the laptop completely fails.
Second, give us some further information about the problem. It is not at all clear whether you are suffering from hard disk problems, memory problems or what. What scans did you carry out and what were the results?
What do you want the end result to be? A working laptop, a new laptop or what? What do you want the laptop for?