HP OmniBook 800CT Service Manual page 66

If the OmniBook isn't released after pressing the Undock button
If you're using a password, make sure it's accepted.
If you're prompted about shutting down devices, and if no applications are using those
devices, press
ENTER
To override the undocking software, press a paper clip or other thin object into the security
opening in the docking system. Hold it in while sliding one release latch forward.
48
. Otherwise, close those applications and try undocking again.