Q: I am running Win 8.1 on bootcamp and cannot get sound from internal speaker

Do you have any unknown devices in Device Manager with a yellow triangle and exclamation mark?

Are the Bootcamp drivers installed?

You should something similar to the following for Sound Devices, if the drivers are installed.

dewby54 wrote:

 

how can I confirm that I have the latest bootcamp drivers for Win 8.1??

1. Check System requirements to install Windows on your Mac via Boot Camp - Apple Support for the BC Driver Package for your specific Mac year/model.

2. Boot Camp: Install or repair Boot Camp drivers as necessary to get the latest updates from Apple.

Can you check Control Panel -> Sound to see if the Default is set up correctly?

Can you post a screen shot of Device Manager and Sound panels?

What model/year is your Mac? The devices under Other Devices is a bit surprising. Can you use the earlier links to repair BC drivers and post the same images after the Repair?