Can I upgrade my Lenovo laptop?

It might be. You would probably have to look on the manufactures site, find your laptop, and see if any upgrades are listed. Upgrading laptops is very limited.

It is unlikely that you can upgrade anything on a laptop other than the memory and the hard drive. They are not designed for upgrading. If you seriously want to do this then you will need to contact Lenovo support - http://support.lenovo.com/...com/us/en/ to see about getting a maintenance manual for disassembling and reassembling this unit. You can also ask them what other CPUs would be compatible with the motherboard used in the laptop.