When pressing the notebook power button nothing is displayed on the
screen or display. The cause of this problem may be a failed AC
adapter, the memory modules (RAM) need to be reseated or a failed
notebook system board component which will require an HP certified
Below steps will assist in identifying the cause of the problem and suggest the best solution.
Test the AC adapter
Follow the steps below to determine whether the problem is related to the AC adapter or your notebook system board.
Remove the battery and disconnect all external devices from the computer.
for several seconds, with all power sources removed. This drains residual power from the system, and may correct many problems.
Connect the AC adapter to a wall outlet and plug the other end into the computer.
to start the notebook PC.
If the notebook does not start or the display is blank then check the power indicator light or power socket LED.
Check the power indicator light or power socket LED
newer models of notebook PCs, there is an LED or indicator light around
the power socket on the notebook. Check to see if this light is on or
off, when the notebook is plugged into AC power.The power indicator light or power socket light should turn on when the AC adapter is connected.
If the light does
turn on then the problem is most likely related to the AC adapter or
the electrical source in your home or office. Go to the Light does not
turn on section on this page.
the light does turn on but the notebook does not start or the there is
a blank screen then continue to the Light does turn on but the notebook
does not start section on this page
The light does not turn on when the AC adapter is connected
the power indicator LED is off, the AC power adapter may need to be
replaced. To determine if the AC power adapter needs to be replaced
follow the steps below:
the power indicator light still does not turn on, then the AC Adapter
needs to be replaced. Contact HP Service and Support for further
Ensure that the AC adapter is plugged
into a known working wall outlet.
To check the wall outlet, plug in a different known working device like a light, radio etc.
Check all of the following connections:
- The connection from the power cord to the wall outlet.
- The connection into the power adapter from the power cord.
- The connection from the AC adapter to the notebook power socket.
button again to test the notebook PC.
Power socket LED or power indicator light is on but the notebook does not start
notebook power indicator light (LED) is on, the AC adapter is working
correctly. The problem is a result of a hardware failure in the
notebook itself. In some cases, reseating the memory module (RAM) may
solve the problem.