HP Rp5700 - Point of Sale System Reference Manual page 145

Table C-1 Numeric Codes and Text Messages (continued)
Control panel message
Parity Check 2
System will not boot without fan
ENWW
Description
Parity RAM failure.
Third-party graphics card may be causing a
problem.
CPU fan not installed or disconnected in
VSFF chassis.
Recommended action
Run Computer Setup and Diagnostic utilities.
Remove third-party graphics card to see if the
problem goes away.
1. Remove the computer cover, press the
power button, and see if the processor
fan spins. If the processor fan is not
spinning, make sure the fan's cable is
plugged onto the system board header.
Ensure the heatsink is properly seated
and installed.
2. If the fan is plugged in and the heatsink
is properly seated but the fan does not
spin, then replace the heatsink-fan
assembly.
POST Numeric Codes and Text Messages 135