Technically, you may be able to upgrade some of the parts like the hard drive, wireless card and RAM. On the other hand, you could easily spend more money on new parts (assuming they fit in your older model laptop) instead of just buying a brand new laptop. If you end up buying a new laptop make sure to wipe the hard drive of the old one. Lots of old data can stay on the hard drive even if you format it. There's a free program called Derek's Boot and Nuke (DBAN) that will do the job. Or you can take out your aggressions on the laptop and take the sledgehammer to it. Again, make sure the hard drive is smashed good.