What Is a POST Code? (Energy on Self Check Code)

This text explains what a POST code is and the way to establish what it means.

What Is a POST Code?

A POST code is a 2-digit hexadecimal code generated throughout the Energy On Self Check.

Earlier than the BIOS has examined every element of the motherboard, this code may be outputted to a POST check card that is plugged into a selected enlargement slot.

If any specific a part of the check fails, the final POST code generated can then be seen utilizing the POST card for assist figuring out what {hardware} did not cross its preliminary check.

A POST code might go by the title Energy On Self Check Code or test-point error code.

Discovering a BIOS POST Code Listing for Your Laptop

POST codes will differ relying on the BIOS vendor (i.e., most motherboards use their very own lists), so it is best to reference those which are particular to your pc, codes that ought to be revealed in your producer’s official web site.

In case you have hassle discovering a listing of POST codes in your pc, motherboard, or BIOS vendor’s web site, you may have the ability to get assist from tech assist, test the present BIOS model in your pc, or discover the codes at a web site like BIOS Central.

Understanding What POST Codes Imply

POST codes correspond immediately to checks which are happening by the POST.

When a POST check card stops at a selected code throughout the boot course of, it may be referenced in opposition to the record of doable POST codes generated by your particular BIOS, serving to to pinpoint the supply of the issue together with your pc beginning up.

You will have to test the documentation that accompanies your pc’s record of BIOS POST codes for assistance on precisely the way to interpret what your card is saying.

Some codes are handed off to the check card after a sure check has accomplished, which means that the subsequent code within the record you are referencing is the place you need to begin troubleshooting.

Different motherboards, nevertheless, ship a code to an connected POST check card solely when an error has really occurred, which means that the {hardware} that code equates to might be the place the issue lies.

So, once more, test together with your pc, motherboard, or BIOS maker for particulars on the way to interpret what you are seeing.

For instance, as an instance that Acer is your motherboard vendor. Your pc will not begin, and so you’ve got connected a POST check card and located the code proven to be 48. A fast take a look at this record of Acer BIOS Publish Codes exhibits that 48 means “Reminiscence examined.”

If the POST code signifies that the final check has failed, we instantly know that the issue would not lie with anything; not the CMOS battery, video card, and so forth., however as a substitute with the system reminiscence.

At this level, you’ll be able to slim your troubleshooting to no matter is referenced. On this case, since it is the RAM, you may take away all however one stick and see in case your pc boots once more.

Different Forms of POST-Degree Errors

POST codes that show on a POST card are particularly useful if you do not have a monitor plugged in, there’s one thing mistaken with the show, or, of course, the reason for the problem is one thing video associated.

There are, nevertheless, different sorts of errors you may see, and even hear, throughout the POST that is perhaps useful, too:

Beep codes are audible error codes that serve an identical function to POST codes, however these errors do not require something however a working inside speaker—no working display screen or any have to open your pc to put in and use a POST card.

If the show is working, you may even see a POST error message show on the display screen. That is only a common error message, like what you’d count on to see at any stage of utilizing your pc. Any such POST error code would not require a POST check card, both.