My Aspire V keyboard keys not working. (o, slash, question mark, Open bracket, and its partners)

Hi! Some of the keys on my keyboard are functioning quite well. They funtion perfectly in the last week. And then, the following keys stopped working (o, slash, question mark, Open bracket, and its partners). So I dont know what to do. I tried uninstalling and reinstalling the drivers and, no solution. Tried restoring it but no solution near it. I really really need help. ;n;