Audio big problems. No sound on windows 7. And that (S/PDIF) thing.

[ToBlossomBlue]

My regards to everyone.
I just joined here because i really need some experienced people's help. Not that i am somehow a noob in computer's industry,however,this problem was destroying me for the past few days.
This may sound like a few threads in one,and i am sorry for posting this as a new one,but i really need your help,because all the other threads i've read,on this and other forums,applied them,and no help whatsoever.

A few days ago,without doing something in particular,the sound just stopped working(does that sound familiar?). So as any other folk would do,i started every tiny little thing to fix that. So i cheched if the speakers,and then headphones,are correctly pluged in. They were. Then i tried disabling and enabling them from volume control options,then from control panel,u name it. Still nothing. So i uninstalled and re-installed my audio drivers. Again no use. I tried everything and literally got nowhere. So i thought it might be a glitch,and Re-Installed a fresh copy of windows. If it sounds familiar,from now on,this threat combines itself with others.
After reinstalling windows 7,my audio appeared as set to digital(s/pdif) and,ofcourse,no sound was available. The speakers and headphones appeared as unplugged. they were plugged in. So I went on the forums again,and saw that someone was informed to change something in bios. So i entered bios,and i saw everything was enabled,and set to HD Audio. When i looked at that,it said that i also have the AC97 option,so i enabled that(however,i always used optimised system defaults on bios,and HD Audio is the default,not the AC97.) Okay,so now i reboot and i can see that the computer is actually showing that i have speakers on right now,not that (s/pdif). So my heart is pumping,my eyes are shining,and i go straight on youtube,play a video aaaaaand....no sound. The sound bars however,are showing i have sound. And so i also try a troubleshoot. This troubleshoot goes along and at the end it says that i have no speakers plugged in. However,windows recognises them. And i know they areworking perfectly,i tried them on my phone,and on another computer. They are perfectly functioning. The audio,as you surely guessed,is an onboard card. I forgot to tell you that i also entered services.msc,and i have checked that windows audio is started.
Any help would be extremely appreciated. I simply have no ideea what to do anymore. Please,for the love of God,help me

 

[fireberd]

First thing, please fill in the "My System Specs" so we know what you have. It helps us to try and help you.

AC97 is the older interface standard for front panel audio (headset and microphone). The current standard is HD Audio. Depending on what interface you have (plug) that plugs into the front panel audio connector on the motherboard is what you should use. The difference between AC97 and HD Audio is basically jack sensing. With HD Audio the sound chip will sense (know) when you have something plugged in.

Go to the Device Manager and post a screenshot of the Sound section.
http://www.sevenforums.com/tutorials/9733-screenshots-files-upload-post-seven-forums.html

This should give us a start in trying to help you.