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C-4 Dell Dimension 900 System Reference and Troubleshooting Guide
Memory Error
at MMMM:SSSS:
OOOOh
(R:xxxxh,
W:xxxxh)
One or more DIMMs
may be faulty or improp-
erly seated.
See “System Memory” and
“Reseating DIMMs” in
Chapter 5.
NVRAM
checksum
Error
An NVRAM checksum
error has occurred.
Run the System Board Devices
tests as described in “Running
the Dell Diagnostics” in
Chapter 3. See “Clearing
NVRAM” in Appendix B.
On Board
Serial Port 1
Conflict(s)
On Board
Parallel Port
Conflict(s)
Onboard serial or paral-
lel port address conflicts
with an expansion card
serial or parallel port.
See “Resolving Software and
Hardware Incompatibilities” in
Chapter 4.
On Board
xxx ...
Conflict(s)
An onboard device has
an IRQ, DMA, or I/O
address conflict.
See “Resolving Software and
Hardware Incompatibilities” in
Chapter 4.
PCI Device
Error
An expansion card may
be faulty or improperly
installed.
Turn off the computer and discon-
nect your system and devices
from their electrical outlets.
Remove both of the cards. (See
“Expansion Cards” in Chapter 5.)
Reconnect the computer and
devices, and start the computer.
If the message reappears, the
expansion card may be malfunc-
tioning. If the message does not
appear, turn off the computer and
reinsert the other card.
Pointing
Device Error
Pointing
Device
Interface
Error
Pointing
Device IRQ
Conflict
A cable or connector
may be loose, or the
mouse or keyboard/
mouse controller may be
faulty.
The IRQ setting of an
expansion card or
system board controller
may be conflicting with
onboard mouse
controller.
Check the keyboard connections
or change the keyboard. Run the
Mouse tests as described in
“Running the Dell Diagnostics” in
Chapter 3. See “Resolving
Software and Hardware Incom-
patibilities” in Chapter 4. Resolve
any mouse IRQ conflicts, and
restart the computer.
Table C-2. System Messages (continued)
Message Possible Cause Corrective Action
NOTE: The Glossary in the system Help defines abbreviations and acronyms.