Startup Problems - HP Notebook Series Reference Manual

Troubleshooting
If the Serial or Parallel Port Is Not Working
Make sure the port connection is secure.
Check the port settings in Control Panel. Open the hardware
Device Manager, then select Ports (COM & LPT).
If the USB Port Is Not Working
Contact the vendor of the peripheral device for the latest USB
drivers.
Check the port settings in Control Panel. Open the hardware
Device Manager, then select Universal Serial Bus Controller.

Startup Problems

If the Notebook Does Not Respond When You
Turn It On
Connect the AC adapter.
Reset the notebook by inserting the tip of a paper clip into
the reset button on the bottom of the notebook. Then press the
power button to turn it on.
If the notebook still does not respond, remove the battery
pack and AC adapter, remove any PC Cards, and undock the
notebook if docked. Then plug in the AC adapter again, and
reset the notebook using the reset button.
If the Notebook Will Not Boot from Battery Power
Make sure the battery pack is properly inserted and fully
charged. Check the battery charge by removing it and
pressing the pad on the side of the battery pack. The lights
show the charge level.
If available, try another battery pack.
6–20 Reference Guide