90% of keys on my laptop aren't working?!

Hello,

About a month or 2 ago I noticed that some of the keys on my laptop stoped working, mainly the arrows from what I remember. And then about a month ago I kinda stopped using that laptop because I had to upgrade to a better one, but yesterday I wanted to use that laptop just to watch some Netflix on while I did work on my new laptop. But now 90% of the keys don't work and I have no idea why. Since getting my new laptop a month ago I've used the old one 4 times tops.

Do any of you know what could be causing it? and any possible solutions? Its a Lenovo G580, if thats important.

Theres a few things I know its not,
1. I tired uninstalling drivers with no luck
2. Theres really no crumbs under the keys I had a look

Thank you anyone that helps