Windows 7: Realtek is installed but can't run it nor find it on the pc.

Yesterday i bought a new motherboard MSI G41M-P26 and i reinstalled windows because of this problem (im using win8 release preview) i installed Realtek (everything went fine) and i restarted my pc, after that i couldn't find the realtek icon anywhere, even on the program files the realtek folder is empty there are only 2 files (RtlUpd.exe can't even run it, and USetup.iss) the HDA folder is empty also. I reinstalled it many times, tried various versions of Realtek, it's not even on the Task Manager. It seems like it's installed but i can't run it. I have everything up to date, Please help me, it's really important for me to use realtek.
PS : i have the sound in case you were wondering. But i need realtek. It has so many good options and i'm using a 5.1 home theater.
I didn't have this problem with my old motherboard, and it was also MSI.
Sorry for my bad english.

Hi AceZero and welcome to Windows 7 Forums

That motherboard has VIA audio installed, specifically the VT1708S codec. Drivers for other codecs, including Realtek, will not work with your setup. Sorry.

VIA audio driver is really bad compared to realtek i can't even use my 5.1 at its full capacity, so the only way is to change my motherboard? or only the sound card? (sorry i'm a newbie)

Its a VIA hardware chipset so the only drivers that will work (or work properly) are the VIA drivers.

If you don't like VIA, as you note either change the motherboard to something that has RealTek or add a PCIe sound card and then disable the Integrated (VIA) in the BIOS. As separate sound card would be the least expensive way to go.

Thank you so much. Everything is so clear now!