Step 3: Turn On The Computer - HP Compaq tc4400 Getting Started Manual

First-time setup
When the computer receives AC power, the battery pack begins
to charge and the battery light (on the front of the computer)
is turned on. When the battery pack is fully charged, the battery
light is turned off.
Leave the computer connected to external power until the battery
pack is fully charged and the battery light is turned off.
✎
A partially charged new battery pack can run the computer after
software setup is complete, but battery charge displays will not be
accurate until the new battery pack has been fully charged.
✎
Power cords and electrical outlets vary in appearance by region
and country.

Step 3: Turn on the computer

To open the computer:
1. Press the display release button 1 to open the display.
2. Raise the display 2.
1–6 Getting Started