User Guide

4. To verify that the wall outlet is working, plug the AC adapter directly to a wall outlet. Do not plug into a power strip, surge protector, or a
secondary power source.
Unplug the AC Adapter from the wall outlet and plug in a small lamp or other device that you know is working.
If any of the wall outlets are not providing power, test the lamp or other device on a different wall outlet.
5. If you have access to a different AC adapter or power pack that is designed for the computer, connect it to the computer and try to start the
computer. If you own or have access to more than one computer, verify that you are using the adapter that belongs to the computer.
CAUTION: Using a power adapter that does not meet the power requirements or has the wrong type of connector might
damage the computer.
6. Remove the power cord from the AC adapter for 5 to 10 seconds.
Reconnect the power cord to the AC adapter. Be certain the AC cable fits tightly into the AC adapter inlet. Then, verify that all
cords and connectors are secure between the power cord, AC adapter, and the computer.
If the computer does not power on, contact HP Customer Support for further assistance.
If the computer powers on, continue to the next step.
Use the following steps to perform an AC Adapter Test using the UEFI Hardware Diagnostics.
1. Make sure the power cord and adapter is connected to the system and wall outlet.
2. Press and hold the power button until the computer turns off completely.
3. Turn on the computer.
4. Immediately press the F2 key repeatedly, about once every second, until the HP PC Hardware Diagnostics UEFI screen displays.
5. In the UEFI Main menu, select Component Tests.
Perform a UEFI AC Adapter Test