Power; Display (Monitor) (Select Products Only) - HP 450 NG User Manual

Symptom Possible solution
Press and hold the power button on the computer for 5 or more seconds to turn off the computer. Then press the power
button again to turn on the computer.
Error message: Invalid When drive activity stops, remove the optical disc inside the optical drive, and then press the
system disk or Non-
System disk or Disk
error

Power

Symptom Possible solution
Computer does not Press and hold the power button until the computer turns off. Then turn the computer on again.
turn off when the
power button is
pressed
Computer shuts down
●
automatically
●

Display (monitor) (select products only)

Symptom
Screen is blank, and
monitor power light is off
Screen is blank
Images on the screen are
too large or too small, or
the images are fuzzy
NOTE: In addition to the information listed here, refer to the documentation that came with your monitor.
22 Chapter 7 Troubleshooting
The computer might be in an exceedingly hot environment. Let it cool down.
Be sure that computer air vents are not blocked.
NOTE: If your computer has an internal fan, be sure that the internal fan is running.
Possible solution
Reconnect the power cable to the back of the monitor and to the AC outlet.
Press the power button on the monitor.
Press the space bar on the keyboard or move the mouse to redisplay the screen image.
Press the Sleep button (select products only) or esc, to resume from Sleep mode.
Press the power button to turn on the computer.
Inspect the monitor cable for bent pins.
If any of the pins are bent, replace the monitor cable.
●
If no pins are bent, reconnect the monitor cable to the computer.
●
Adjust the monitor resolution setting in Windows.
▲
Select the Start button, select the Settings icon
appropriate resolution, and then select Keep changes.
spacebar
, and then select System. Under Display, select the
on the keyboard.