7 keys not working


Aug 11, 2013
7 of the keys on my HP Pavilion dv(six) are not working. The keys that are not working are:
(Six) key
(Five) key
(Subtract) key
F1 key
F(Five) key
F9 key
' key.
What should I do? I haven't been eating or drinking much near this laptop and I have checked the keys. I also have removed the keyboard driver and re installed it, however, the problems still wouldn't go away. I have tried the 'Hard Reset' but it still doesn't work. Do I really have to buy a new keyboard? Please help.

PS. Other problems with this computer includes: Noisy fan and overheating.

Edit: Now my W, s, 2 and X key don't work.