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Blank screen (no video).
Cause
Monitor cable is plugged into the wrong connector.
Monitor settings in the computer are not compatible with
the monitor.
Monitor is configured to use an input that is not active.
Blank screen and the power LED flashes Red five times, once every second, followed by a two second pause, and the computer beeps five
times. (Beeps stop after fifth iteration but LEDs continue flashing.)
Cause
Pre-video memory error.
Blank screen and the power LED flashes Red six times, once every second, followed by a two second pause, and the computer beeps six
times. (Beeps stop after fifth iteration but LEDs continue flashing.)
Cause
Pre-video graphics error.
74
Chapter 6 Troubleshooting without diagnostics
Solution
CAUTION:
When attempting to resume from Sleep state, do not
hold down the power button for more than four seconds.
Otherwise, the computer will shut down and you will lose any
unsaved data.
Systems may have a monitor connection on both the motherboard
or an add-in card. Try moving the monitor connection to a different
connector on the back of the computer
1.
In Control Panel, select Category from the View by list, then
under Appearance and Personalization, select Adjust screen
resolution.
To access Control Panel, type control panel in
the taskbar search box, and then select Control Panel from
the list of applications.
2.
Expand the Resolution box, and then use the sliding control to
reset the resolution.
Use the monitor's on-screen menu controls to select the input that
is being driven by the system. Refer to the monitor's user
documentation for more information on the on-screen controls and
settings.
Solution
1.
Reseat DIMMs. Power on the system.
2.
Replace DIMMs one at a time to isolate the faulty module.
3.
Replace third-party memory with HP memory.
4.
Replace the system board.
Solution
For systems with a graphics card:
1.
Reseat the graphics card (if applicable). Power on the system.
2.
Replace the graphics card (if applicable).
3.
Replace the system board.
For systems with integrated graphics, replace the system board.
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