LED Letters/Numbers on Motherboard

[Saxguy101]

Hello,

I've had my PC for a couple of weeks and I just never thought to ask what the LED numbers/letters on the motherboard mean. So, what do they mean?

Thanks.

 

[JackNaylorPE]

Asus calls them Q-codes..... they are error codes and explained in your MoBo manual.

 

[rusabus]

They are POST codes. POST stands for Power-On Self Test. Each code corresponds to a different test. If one test fails, the machine will stop with that particular code displayed. You can then look up the code in the motherboard's manual and find out what is failing.

 

[Saxguy101]

Well on my Motherboard I've seen it show 3 different things: 03, 04 and A0. What does that mean? Is it bad?

 

[rusabus]

What motherboard do you have?

 

[JackNaylorPE]

Well on my Motherboard I've seen it show 3 different things: 03, 04 and A0. What does that mean? Is it bad?

Look in the manual .... the codes are of no concern if the system boots, numbers will flash by as it goes thru each test or process..... when it fails, the last code remains displayed.

Back in prehistoric days we had beeps..

http://www.computerhope.com/beep.htm

Again, look in ya manual for a description of the more common display codes.