You have fallen for an advertising ploy. These reg cure programs find lots of false faults so you will buy the program. You don't need to.
You need to give a lot more information.
How old is the laptop?
Is there plenty of free space on the hard drive?
Have you ever cleaned out the fans?
What OS is it running?
Is it slow all the time, or just on the internet? Does it play cds and dvds okay?
Have you got a firewall, antivirus and antispyware running? Do you update them and run them regularly?
Do you ever turn the laptop off?
How much RAM has it got?
Look at your task manager. How many processes are running at this minute?