System recovery on an HP Pavilion a300n

I am trying to recover a pavilion a300n using the recovery image on the hard drive.

Whe I boot up the computer It says to press F1o to start the system recovery. I press F10 (many times) and the computer continues on and tries to boot normally.

I heard a rumor that there may be another key to press to enter the recovery partion but I have not been able to find it.

I popped the drive out and put it in a usb external drive enclosure and I can see 2 partions on this drive (the recovery partion and the windows partion).

Does anyone know of a way to get the system recovery to startup??

Any help is much appreciated.

Thanks.