HP Pavilion dv4-2116tx Entertainment Notebook PC - Manual (Page 95)

Testing an AC adapter
Test the AC adapter if the computer exhibits any of the following symptoms when it is connected to AC
power:
● The computer will not turn on.
● The display does not turn on.
● The power light is off.
To test the AC adapter:
1. Remove the battery from the computer.
a. Turn the computer upside down on a flat surface.
b. Slide the battery release latch (1) to release the battery.
c. Pivot the battery (2) upward and remove the battery from the computer (3).
2. Connect the AC adapter to the computer, and then plug it into an AC outlet.
3. Turn on the computer.
● If the power light turns on, the AC adapter is functioning properly.
● If the power light remains off, the AC adapter is not functioning and should be replaced.
Contact technical support for information on obtaining a replacement AC power adapter.
Select Start > Help and Support > Get assistance.
Using external AC power 83