Buy an external keyboard, plug it into the USB port (you can always get an adapter to increase the number of ports).
My last laptop gradually deteriorated. First the keys were sticking, then the mousepad failed, then I had to press 6 buttons to get it started, then eventually the adapter blew up (yep, sparks and flames). Figured I should let it rest. Bought a Viao instead! There are some great deals out there at the moment.