C-2
Error Messages
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Power-On Self-Test Messages
Continued
Message Beeps* Probable Cause Recommended Action
203-Memory
Address Error
None RAM failure. 1. Run Computer Setup or Windows
NT or Windows 95 utilities.
2. Replace the memory module(s) (if
any).
3. Replace system board.
205-Memory Error None Cache memory error
(processor cache).
Run the Configuration and Diagnostics
utilities.
206-Secondary
cache controller
failure
None Cache memory controller or
RAM failure.
Run the Configuration and Diagnostics
utilities.
207-ECC corrected
single bit error
2S Single Bit ECC error Replace DIMM if error persists.
213-Incompatible
DIMM Module in
DIMM Socket(s) X,
X, ...
2S A DIMM module in DIMM
socket identified in the error
message is missing critical
SPD information, or is
incompatible with the chipset
Replace the DIMM with a module
conforming to the SPD standard. See
Adding System Memory in Chapters 5,
"Upgrading the Desktop Computer" and
Chapter 6, "Upgrading the Minitower
Computer."
301-Keyboard Error None Keyboard failure. Reconnect keyboard with computer
turned off.
301-Keyboard Error
or Test Fixture
Installed
None Keyboard failure. Replace the keyboard.
303-Keyboard
Controller Error
None I/O board keyboard controller. 1. Reconnect keyboard with computer
turned off.
2. Replace the system board.
304-Keyboard or
System Unit Error
None Keyboard failure. 1. Replace the keyboard.
2. Replace the system board.
402-Monochrome
Adapter Failure
1L, 2S Monochrome display
controller.
Replace the monochrome display
controller.
* L = Long, S = Short
continued
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