Hello and thanks for your question. I look forward to assisting you today with the best answer possible.
What is the make and model of your laptop?
I am sorry to say this is a very common issue for laptop. The keypad needs to be changed.
If you want to change it on your own, please let me know. I'll walk you through the replacement steps.
There is also a workaround which can be acheived at a very less price. You can buy an external usb keyboard and just connect it to your computer.
Please let me know what you want to do -- I'll guide you accordingly.