My laptop keyboard doesn't work?

Whenever I try to use it the laptop makes this weird clicky sound, and now i'm forced to use the on-screen keyboard which is extremely tedious. Is there any advice you could please give me? Also if it helps it's a Windows 7 Starter Compaq Mini. Also the mousepad is not functional as well, it hasn't been for a while, but I just connected a normal mouse to it. Please help?