user manual

Service Reference Guide, dx5150 361685-001 C–1
C
POST Error Messages
This appendix lists the error codes, error messages, and the various indicator light and audible
sequences that you may encounter during Power-On Self-Test (POST) or computer restart, the
probable source of the problem, and steps you can take to resolve the error condition.
POST Message Disabled suppresses most system messages during POST, such as memory count
and non-error text messages. If a POST error occurs, the screen will display the error message.
To manually switch to the POST Messages Enabled mode during POST, press the
Tab key. The
default mode is POST Message Disabled.
The speed at which the computer loads the operating system and the extent to which it is tested
are determined by the POST mode selection.
Quick Power-On Self Test is a fast startup process that does not run all of the system level tests,
such as the memory test. Disabling this feature causes all of the ROM-based system tests to run
and booting takes longer to complete.