how Power on Self Test (POST) works and how to identify some kind of Error codes information display on your screen.

When you turn the power of your computer, the computer test itself to make sure that the main component are working, Most time you wonder what power on self test (POST) does which am going to show you in these post on how to identify some kind of error code information that frequently display on your computer screen, the POST is actually a set of program or rotten that are coded inside your computer, they are part of your bios, what happen is that whenever you turn on your computer the POST goes out and test, trying to communicate with other devices for example it try to talk to your keyboard, floppy drive controller and one other things it does is to check your c:drive for example it test the memory on the system board, it basically test the CPU if you can add or substrate and it try to communicate with your ports, if there is any problem, the post is to give a warning message and one of the ideal behind posting is to give you some area code to help you figure out why booting procedure of your computer fails which I will be sharing with you on the ideals of the kind of information seen on the screen of your computer when encounter problem.

Identifying some kind of Error codes information display on your screen
For example, once your computer display an error code starting from 3digits in link, starting from 1xx follow by two other 61, it typically indicates problem from the system board, for example if the computer displays 161 it simply means that the cmos battery is dead and once the cmos battery is dead the boot procedure won’t continue which might result one having an error message
Errors in the 2xx (two hundred) range are typically memory errors
Error in 3xx (three hundred range) are typically keyboard error
Error in 6xx (six hundred range) are typically associated with the floppy drive/controlled error
Error in 7xx (seven hundred range) are typically associated with Math Co-processor
Error in 9xx (nine hundred range) are typically associated with the Parallel Port (LPT1)



Note: there are many errors that are not listed if you go into trouble shoot post effectively you are going to look at the documentation, they are really hundreds of different of error available but these gives you an ideal of the kind of information display on the screen of your computer.