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Home » Dictionary » Motherboard

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Numeric

POST
Author: Gabriel Torres Last Updated: December 28, 2005
Category: Motherboard

Power-On Self Test

POST is a program that is run every time the PC is turned on. Among other things, it sets up the video, counts the memory and, at its end, shows on the screen a configuration table containing a list of the system hardware configuration.

This program is stored inside the PC ROM memory, which is physically located on the motherboard. Inside this ROM memory chip there are also other two programs stored: BIOS and setup.

On the pictures below you can see some information that is printed on the screen during POST execution.

POST
click to enlarge
Figure 1: Some information presented by POST.

POST
click to enlarge
Figure 2: Hardware configuration summary presented at the end of POST.

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