HP EliteDesk 800 95W G4 Maintenance and Service Guide - Page 74

Solving display problems

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After installing the media card reader and booting to Windows, the reader and the inserted cards are not recognized by the computer. Cause Solution The operating system needs time to recognize the device if the reader was just installed into the computer and you are turning the PC on for the first time. Wait a few seconds so that the operating system can recognize the reader and the available ports, and then recognize the media inserted in the reader. After inserting a media card in the reader, the computer attempts to boot from the media card. Cause Solution The inserted media card has boot capability. 1. If you do not want to boot from the media card, remove it during boot or do not select the option to boot from the inserted media card during the boot process. 2. During POST (Power On Self-Test), press F9 to modify the boot menu. 3. Change the boot sequence in F10 Computer Setup. Solving display problems If you encounter display problems, see the documentation that came with the monitor and to the common causes and solutions listed in the following table. Blank screen (no video). Cause Monitor is not turned on and the monitor light is not on. Bad monitor. The cable connections are not correct. You may have a screen blanking utility installed or energy saver features are enabled. System ROM is corrupted; system is running in Boot Block Emergency Recovery Mode (indicated by eight beeps). You are using a fixed-sync monitor and it will not sync at the resolution chosen. Computer is in Sleep state. Monitor settings in the computer are not compatible with the monitor. Solution Turn on the monitor and check that the monitor light is on. Try a different monitor. Check the cable connection from the monitor to the computer and to the electrical outlet. Press any key or click the mouse button and type your password (if set). Reflash the system ROM with the latest BIOS image. Be sure that the monitor can accept the same horizontal scan rate as the resolution chosen. Press the power button to resume from Sleep state. 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. 1. In Control Panel, select Category from the View by list, then under Appearance and Personalization, select Adjust screen resolution. To access Control Panel in Windows 10, type control panel in the taskbar search box, and then select Control Panel from the list of applications. 66 Chapter 6 Troubleshooting without diagnostics

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After installing the media card reader and booting to Windows, the reader and the inserted cards are not recognized by the
computer.
Cause
Solution
The operating system needs time to recognize the device if the
reader was just installed into the computer and you are turning
the PC on for the
first
time.
Wait a few seconds so that the operating system can recognize
the reader and the available ports, and then recognize the media
inserted in the reader.
After inserting a media card in the reader, the computer attempts to boot from the media card.
Cause
Solution
The inserted media card has boot capability.
1.
If you do not want to boot from the media card, remove it
during boot or do not select the option to boot from the
inserted media card during the boot process.
2.
During POST (Power On Self-Test), press
F9
to modify the
boot menu.
3.
Change the boot sequence in F10 Computer Setup.
Solving display problems
If you encounter display problems, see the documentation that came with the monitor and to the common
causes and solutions listed in the following table.
Blank screen (no video).
Cause
Solution
Monitor is not turned on and the monitor light is not on.
Turn on the monitor and check that the monitor light is on.
Bad monitor.
Try a
different
monitor.
The cable connections are not correct.
Check the cable connection from the monitor to the computer and
to the electrical outlet.
You may have a screen blanking utility installed or energy saver
features are enabled.
Press any key or click the mouse button and type your password
(if set).
System ROM is corrupted; system is running in Boot Block
Emergency Recovery Mode (indicated by eight beeps).
Reflash
the system ROM with the latest BIOS image.
You are using a
fixed-sync
monitor and it will not sync at the
resolution chosen.
Be sure that the monitor can accept the same horizontal scan rate
as the resolution chosen.
Computer is in Sleep state.
Press the power button to resume from Sleep state.
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.
Monitor settings in the computer are not compatible with the
monitor.
1.
In Control Panel, select
Category
from the
View by
list, then
under
Appearance and Personalization
, select
Adjust
screen resolution
.
To access Control Panel in Windows 10, type
control
panel
in the taskbar search box, and then select
Control
Panel
from the list of applications.
66
Chapter 6
Troubleshooting without diagnostics