Solving Display Problems - HP Compaq Elite 8300 All-in-One Maintenance & Service Manual

After installing the media card reader and booting to Windows, the reader and the inserted cards are not recognized
by the computer.
Cause
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.
After inserting a media card in the reader, the computer attempts to boot from the media card.
Cause
The inserted media card has boot capability.

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.
Table 8-5 Solving display problems
Blank screen (no video).
Cause
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).
Computer is in standby mode.
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.
118 Chapter 8 Troubleshooting Without Diagnostics
Solution
Wait a few seconds so that the operating system can
recognize the reader and the available ports, and then
recognize whatever media is inserted in the reader.
Solution
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.
Solution
Press any key or click the mouse button and, if set, type your
password.
Reflash the system ROM with the latest BIOS image.
Press the power button to resume from standby mode.
CAUTION: When attempting to resume from standby
mode, 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.
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.