HP computer Troubleshooting And Maintenance Manual page 7

Symptom Possible solution
Computer seems to Use the Windows Task Manager to close any programs not responding, or restart the computer:
be locked up and is
1.
not responding.
2.
3.
If closing programs does not work, restart the computer:
1.
2.
Error message: When drive activity stops, remove the disc and press the spacebar on the keyboard. The computer should start up.
Invalid system disk or
Non-System disk or
Disk error.
ENWW
Press the Ctrl+Alt+Delete keys on the keyboard simultaneously.
Click Start Task Manager.
Select the program that is not responding, and then click End Task.
Press the Ctrl+Alt+Delete keys on the keyboard simultaneously.
Click the Arrow button next to the red Shut Down button, and then click Restart.
Or, press and hold the Power button on the computer for 5 or more seconds to turn off the computer, and
then press the Power button to restart the computer.
Computer does not start
3