Go to Start>Control Panel>Sound>Playback tab. To set, repeatedly press Fn+F8 (or ctrl+alt+F4) to cycle through the settings (laptop display only - laptop + projector - projector only). Some models do better if the projector is set to be the primary display. 
(Optional, some people close the laptop lid immediately after hitting the power button but I am not sure why. Adjust the projector settings to receive HDMI audio if any. Turn on the projector and select the HDMI port you are using.If the projector has a "DVI/HDMI" port do not use it.
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Connect the HDMI cable to the computer and projector.HDMI audio is extremely finicky and seems to usually need a reboot. Every time you try a different solution you should reboot the computer.
Later, after you get your HDMI audio working, if you disconnect the cable while the computer is running and lose your audio, try closing and then re-opening whichever program you were using that generates audio.
Turn off the computer and projector before connecting the HDMI cable. On models with Intel graphics the HDMI audio driver will appear in the Device Manager as "Audio Device on High Definition Audio Bus" or "Intel Display Audio". HDMI audio is incorporated into the graphics card's driver so make sure you have the newest version of your graphics card driver. HDMI has its own audio driver separate from the audio driver. Later, after you get your HDMI audio working, if you find that it still does not work on batteries you can change your power management settings in the Control Panel. Some of the models have a power management scheme that will not allow for HDMI audio while running on batteries. Separately), available from most electronics retailers. To transmit video signals through the HDMI port, you need an HDMI cable (purchased The computer can support one HDMI device connected to the HDMI port, while simultaneously supporting an image on the computer display or any other supported external display. The HDMI port connects the computer to an optional video or audio device, such as a high-definition television, or any compatible digital or audio component. Select computer models include an HDMI (High Definition Multimedia Interface) port. If a properly connected external display device does not display an image, press To connect a display device, connect the device cable to the external monitor port. The external monitor port connects an external display device, such as an external monitor or a projector, to the computer. Your computer has an external monitor port that allows you to connect external monitors and projectors. Your computer enables you to use a variety of video features:Įdit pictures and video to create presentationsĬonnecting an external monitor or projector
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