HP Xw4400 - Workstation - 2 GB RAM Reference Manual page 141

Table 5-18 POST error messages (continued)
Screen message
ECC Multiple Bit Error
Detected in Memory Module
Parity Check 2
ENWW
Probable cause
Chipset has detected more than one
bad bit in a 64-bit quadword of the
memory array.
Parity RAM failure.
Recommended action
Replace the memory module.
Run Computer Setup and Diagnostic utilities.
POST and error messages 131