HP Pavilion dm4-3013cl Entertainment Notebook PC - Manual (Page 104)

A Troubleshooting and support
Troubleshooting
The computer is unable to start up
If the computer does not turn on when you press the power button, the following suggestions may
help you determine why the computer will not start up:
● If the computer is plugged into an AC outlet, plug another electrical device into the outlet to be
sure that the outlet is providing adequate power.
NOTE: Use only the AC adapter provided with the computer or one approved by HP for this
computer.
● If the computer is running on battery power or is plugged into an external power source other
than an AC outlet, plug the computer into an AC outlet using the AC adapter. Be sure that the
power cord and AC adapter connections are secure.
The computer screen is blank
If the screen is blank, but the computer is on and the power light is on, the computer may not be set
to display the image on the computer screen. To transfer the image to the computer screen, press the
f4 action key.
Software is functioning abnormally
If the software is unresponsive or responds abnormally, follow these suggestions:
● Restart the computer by selecting Start > Shut down > Restart.
If you cannot restart the computer using this procedure, refer to the next section, The computer
is on but not responding on page 95 .
● Run a virus scan. For information about using the antivirus resources on the computer, refer to
Securing your computer and information on page 74 .
94 Appendix A Troubleshooting and support