HP OmniBook 3100 User Manual page 24

Troubleshooting
If the OmniBook turns off immediately after it turns on
Battery power is probably extremely low. Plug in the ac adapter, or turn off the
OmniBook and insert a fresh battery.
If the OmniBook stops responding
Try waiting a few minutes for a response. If after a few minutes there is no
response, press CTRL+ALT+DEL to close the non-responding application.
If nothing happens, press the blue power button for 4 seconds., After the
computer turns off, press the power button again.
Use a paper clip to depress the system off button of the back of the unit, then
press the blue power button.
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