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What Exactly is BIOS? Please Explain.


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#1 F-1DeskLamp

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Posted 16 December 2017 - 05:54 PM

I've done some tinkering with it before, but I never really understood it.

When I was taking on the BIOS, I was also doing something with the pins on the mobo, and moving some kind of connector between the to one position and then back. I believe this was during a BIOS reset. 

What is the story behind these two things?



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#2 OldPhil

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Posted 16 December 2017 - 05:57 PM

It is the base to trigger all that goes on with the system.


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#3 sikntired

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Posted 16 December 2017 - 06:07 PM

This will give you a more in-depth understanding.

https://www.lifewire.com/bios-basic-input-output-system-2625820

#4 AnythingButMalware

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Posted 16 December 2017 - 06:14 PM


Have you tried turning it off and back on? :P


#5 Chris Cosgrove

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Posted 16 December 2017 - 06:37 PM

 

BIOS . . . I never really understood it . . . I was also doing something with the pins on the mobo

 

The moral here is only make one change at a time !  If it all goes pear-shaped after the one change then you know what caused it. If you make two or three changes at the same time - which one is the culprit ?

 

As has been explained above, the BIOS is the Basic Input/Ouput System and is responsible for starting a computer up.

 

The pins you refer to are almost certainly the CMOS/BIOS re-set jumper. Three pins with a small plastic connector between two of them. The connector - the jumper - normally stays between two of them and you move it to connect the third pin to re-set the BIOS. This was akin to a 'get out of jail free' card, this operation would re-set the BIOS to default settings if it had got messed up. They have gone out of fashion in recent years because modern UEFI/BIOS include a re-set to factory default option inside them.

 

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#6 F-1DeskLamp

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Posted 16 December 2017 - 06:39 PM

Thanks, all.  



#7 MadmanRB

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Posted 16 December 2017 - 11:00 PM

For me I always thought of the bios as the ignition switch in a computer to use the good ol car analogy.

The power button is of course the key to turn it on but in between you and the motor there is always something in between to get the engine started.

UEFI is almost like a key too but shares some of the powers of a ignition switch


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