NEC Express5800 120Lh User Manual page 45

POST
POST (Power On Self-Test) is the self-diagnostic program stored in the system memory.
When you power on the server, the system automatically runs POST to check the mother board,
ECC memory module, CPU module, keyboard, and mouse. POST also displays messages of the
BIOS setup utility, such as the start-up message, while in progress.
With the factory setup of the server, the NEC logo appears on the display unit while POST is in
progress. (To display the POST check results, press Esc.)
NOTE:
unit without pressing Esc. To do so, select "Enabled" for "Boot-time
Diag Screen" under the Advanced menu of the BIOS setup utility.
The POST check results should be checked in the following cases.
When the server is used for the first time.
When the server appears to fail.
When the server beeps for many times between power-on and OS start-up.
When an error message appears on the display unit.
You can set the POST check results to appear on the display
General Description 2-19