I need help!!!

[Brandon]

I was working all this morning no problem. I left for 20 minutes to take 
the dog for a walk and I come back to my powerbook G4 shut down. The 
caps lock and the num lock leds are lit up and will not turn off. I can 
not power my machine up at all. The machine had a full battery and was 
plugged into the power supply while I was gone.  Anyone have an idea of 
what could have happened. I have unplugged the machine from the power 
supply  and removed the battery. Tried to power up with only the battery 
and only the power supply. The leds are still lit up . The num lock 
flickers when plugged into the power supply. I have tried resetting the 
computer. Everything. I am at a loss. I would greatly appreciate any 
help anyone can give me. I am lost without this machine.

Brandon