No sound after installing Windows 7

Hello

I was wandering if you guys could help me out please.

I have no sound after installing Windows 7 Ultimate 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_rtm.101119-1850).
I tried everything but I can't seems to fix it.

I have attached the DxDiag file. can someone PLEASE give me some advice.

thank you

Sorry I forgot to attache the Problem Devices file

Hi chap, please try a BIOS upgrade first, if that fails to work.. I would advise that you try and upgrade to SP2, as sometimes certain PCs do experience hardware detection problems when a service pack lower than they expect is loaded. What kind of computer is it?

@karencho

From dxdiag, it looks like your sound card hardware is detected. However, your computer sound is running with the generic Windows driver. You should install the hardware specific driver for your machine. Do you know make/model of your computer or motherboard? The support site from the vendor should provide the hardware specific drivers for you machine.

Let us know if you need further help (fyi.. in the snippet from dxdiag below, note a driver is listed for your sound card but the Driver Provider is Microsoft! That means it's running the generic sound driver)

Code:

-------------
Sound Devices
-------------
            Description: Öèôðîâîå àóäèî (S/PDIF) (Óñòðîéñòâî ñ ïîääåðæêîé High Definition Audio)
Default Sound Playback: Yes
Default Voice Playback: Yes
            Hardware ID: HDAUDIO\FUNC_01&VEN_11D4&DEV_1986&SUBSYS_1043818F&REV_1005
        Manufacturer ID: 1
            Product ID: 65535
                  Type: WDM
            Driver Name: HdAudio.sys
        Driver Version: 6.01.7601.17514 (English)
      Driver Attributes: Final Retail
            WHQL Logo'd: Yes
          Date and Size: 11/21/2010 07:23:47, 350208 bytes
            Other Files:
        Driver Provider: Microsoft
        HW Accel Level: Basic
              Cap Flags: 0xF1F
    Min/Max Sample Rate: 100, 200000
Static/Strm HW Mix Bufs: 1, 0
Static/Strm HW 3D Bufs: 0, 0
              HW Memory: 0
      Voice Management: No
EAX(tm) 2.0 Listen/Src: No, No
  I3DL2(tm) Listen/Src: No, No
Sensaura(tm) ZoomFX(tm): No