Hi Robert,
1.
Are you able to install the Sound Drivers successfully?
2.
Are you able to hear the login and logoff sound from your computer?
This issue can be caused due to the Motherboard pending driver updates or settings.
I would suggest you to install the sound drivers from the Motherboard disc as well as update the latest BIOS and chipset
drivers from the manufactures’ website and check if it helps.
Note: Modifying BIOS/ complementary
metal oxide semiconductor (CMOS) settings incorrectly can cause serious problems that may prevent your computer from booting properly. Microsoft cannot guarantee that any problems resulting from the configuring of BIOS/CMOS settings can be solved. Modifications
of the settings are at your own risk.
You may also refer to the steps from the following Microsoft article and check if it helps.
No sound in Windows:
http://windows.microsoft.com/en-in/windows/no-sound-help#no-sound=windows-8&v1h=win8tab1&v2h=win7tab1&v3h=winvistatab1&v4h=winxptab1
Hope it helps.
Keep us updated on the status of the issue.