Analog sound problem on motherboard

[yubiunderscore]

Hi guys i have problem with my sound on COMPUTER (not laptop okay)

Well first my mainboard was P5G41T M-LX3

Last month im updated to newer bios available from Asus everything work fine and smoothly

But today my sound disappear

Let me explain what wrong is

1.on realtek app on tray only showing digital sound spdif (NOT Speaker analog)

2.im try from control panel and open SOUND and got list of my playback devices,but what wrong is "speaker realtek high definition not plugged in" and cannot set to default even after im put jack on back panel onboard sound(the green one) no sound no nothing

3.i try clean install windows and updated the driver but still the same

4.last thing i try to boot live cd linux (mint and ubuntu) it still the same,what weird is only detect digital sound not realtek speaker analog device

Well the problem in my cases is,why only digital sound output alive while analog output dead(not useable)

I try too look at bios it only show front panel plugin which is not related with my backpanel analog realtek audio right ?

i try to upgrade and downgrade bios this afternoon and still the problem occured

So help me analyze and fix this please

BIG NOTE from me

I try every possible solution such as
Clean install windows
Updated driver sound
Try boot to another live linux

 

[RememberThe5th]

I hsd lx2, I pretty much always used windows gemeric drivers for soundcard (onboard), cause if you have nvidia/amd gpu they try to install their own sound drivers and that messes with realteks one.

 

[yubiunderscore]

I forgot to mention im not using any external card

Like vga or sound card

Just onboard thats all

 

[RememberThe5th]

I meant that you uninstall sound drivers and let windows install its own.

 

[yubiunderscore]

I do that as well,after clean install windows

as i mention up there

But only digital sound was alive

And got "speaker realtek hd not pluggin" in control panel->sound
And i cannot set it as default either
Even afte i plug jack on backpanel(the green one)

Well my last guess was my motherboard at fault here