HP ProDesk 405 G4 Small Form Factor Maintenance And Service Manual page 91

Business pc
Table of Contents

Advertisement

Blank screen (no video).
Cause
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.
Blank screen and the power LED flashes Red seven times, once every second, followed by a two second pause, and the computer beeps
seven times. (Beeps stop after fifth iteration but LEDs continue flashing.)
Cause
System board failure (ROM detected failure prior to video).
Monitor does not function properly when used with energy saver features.
Cause
Monitor without energy saver capabilities is being used with energy
saver features enabled.
Solution
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.
Solution
Replace the system board.
Solution
Disable monitor energy saver feature.
Solving display problems
81

Advertisement

Table of Contents
loading

Table of Contents