Compaq Evo D300 Troubleshooting Manual page 54

Post Error Messages
Numeric Codes and Text Messages
Code/Message
201-Memory
Error
202-Memory
Type Mismatch
207-ECC
Corrected Single
Bit Errors in
Memory Module
Socket(s) y,y, ...
212-Failed
Processor
*L = Long, S = Short
A–4
Beeps Probable Cause
None RAM failure.
None Memory modules do
not match each other.
2S* Single Bit ECC error.
None Processor has failed to
initialize.
Recommended Action
1. Run Computer Setup or
Windows utilities.
2. Ensure memory and
continuity modules are
installed correctly.
3. Verify proper memory
module type.
4. Remove and replace the
memory module(s) one
at a time to isolate faulty
module.
5. Replace faulty memory
module(s).
6. If error persists after
replacing memory modules,
replace the system board.
Replace memory modules with
matched sets.
1. Verify proper memory
module type.
2. Try another memory socket.
3. Replace memory module if
problem persists.
1. Reseat the processor in its
socket.
2. If the processor does not
respond, replace it.
Troubleshooting Guide