HP 285 Maintenance and Service Guide - Page 91

Solving CD-ROM and DVD problems, or to the documentation that came with the optional device.

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Memory count during POST is wrong. Cause The memory modules may not be installed correctly. Integrated graphics may use system memory. Solution Check that the memory modules have been installed correctly and that proper modules are used. No action required. Insufficient memory error during operation. Cause Too many Terminate and Stay Resident programs (TSRs) are installed. You have run out of memory for the application. Solution Delete any TSRs that you do not need. Check the memory requirements for the application or add more memory to the computer. 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 Solution Memory is installed incorrectly or is bad. 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. Solving CD-ROM and DVD problems If you encounter CD-ROM or DVD problems, see the common causes and solutions listed in the following table or to the documentation that came with the optional device. System will not boot from CD-ROM or DVD drive. Cause The device is attached to a SATA port that has been hidden in the Computer Setup utility. Removable Media Boot is disabled in the Computer Setup utility. Network Boot is enabled in Computer Setup. Non-bootable CD in drive. Boot order not correct. Solution Run the Computer Setup utility and ensure Device Available is selected for the device's SATA port in Security > Device Security. Run the Computer Setup utility and enable booting to removable media in Storage > Storage Options. Ensure CD-ROM is enabled in Storage > Boot Order. Run the Computer Setup utility and disable Network Boot in Security > Network Boot. Try a bootable CD in the drive. Run the Computer Setup utility and change boot sequence in Storage > Boot Order. Solving CD-ROM and DVD problems 83

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Memory count during POST is wrong.
Cause
Solution
The memory modules may not be installed correctly.
Check that the memory modules have been installed correctly and
that proper modules are used.
Integrated graphics may use system memory.
No action required.
Insufficient
memory error during operation.
Cause
Solution
Too many Terminate and Stay Resident programs (TSRs) are
installed.
Delete any TSRs that you do not need.
You have run out of memory for the application.
Check the memory requirements for the application or add more
memory to the computer.
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
Solution
Memory is installed incorrectly or is bad.
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.
Solving CD-ROM and DVD problems
If you encounter CD-ROM or DVD problems, see the common causes and solutions listed in the following table
or to the documentation that came with the optional device.
System will not boot from CD-ROM or DVD drive.
Cause
Solution
The device is attached to a SATA port that has been hidden in the
Computer Setup utility.
Run the Computer Setup utility and ensure
Device Available
is
selected for the device's SATA port in
Security
>
Device Security
.
Removable Media Boot is disabled in the Computer Setup utility.
Run the Computer Setup utility and enable booting to removable
media in
Storage
>
Storage Options
. Ensure CD-ROM is enabled
in
Storage
>
Boot Order
.
Network Boot is enabled in Computer Setup.
Run the Computer Setup utility and disable Network Boot in
Security
>
Network Boot
.
Non-bootable CD in drive.
Try a bootable CD in the drive.
Boot order not correct.
Run the Computer Setup utility and change boot sequence in
Storage
>
Boot Order
.
Solving CD-ROM and DVD problems
83