According to the BIOS string there you have the correct BIOS for the M573 and the NSSI gives an inaccurate figure. There were 3 BIOSes in total, this is the second.
Now why your sound card isn't working: You wrote that once you managed to get your sound card activated:
nikosgr wrote on 2021-10-05, 16:44:
I managed only one time to see active the sound card in hundred tries , then i just reboot the pc without any change and the card is missing again.
So it looks like she's not completely dead.
Can you scan the audio chip to see if any of the legs have loose contact? Or any of the SMD components in the area? I would try carefully with a brush and an IPA to clean all the legs of the audio chip. Magnifying glass will help a lot.
I tried switching off the same sound card with a jumper on my M590 - it can still be seen at boot and in Windows. Only after disabling even in setup BIOS disappears and does not load.
But I have AMI BIOS, while you have AWARD - I don't see any option in Awardedit to turn SoundPro on/off in BIOS 0430 (I assume the other two versions will be the same). Really weird...