COMPAQ Presario 900 problem?

The message about a stuck key means that at least one key, ANY key, is continously in a depressed state. This don't means that you have a key that no longer move or is always down. It can mean that the contact for a key is always closed even if the key is up.
It can also mean that the keyboard scanning logic is broken and falsly report a key as been depressed.

You probably need to replace the keyboard.

Electro
July 2012