Slowest Laptop I have ever used!

I've been using a lenovo laptop for the past three years since I started university. From the moment I started using the laptop it just started getting slower and slower and slower. I had barely used up any of the laptop memory and it just continued to lag, The keyboard of the laptop is know not working.

They are beautifully designed Laptops but when they start giving out its like there is no way possible that you can help it. The material used to build them up is not of good quality. I don't recommend anybody buys these laptops.