Turn on your tablet. Connect the HDMI cable to your TV, turn on your TV. Now you have to wait for windows to recognize the device and install drivers, you should have a window saying “Installing device…” or something like that. After this long press (right click) on the windows audio icon in the lower right corner, select Playback Devices. Here you should see at least 2 devices: Intel SST speakers (the tablet’s internal speakers) and your tv, for example I see a Samsung SST device. Set this to default if it isn’t already.
To have picture you have to open the right side menu in windows 10 (swipe in from the right) and select Project screen, and use the Duplicate or Extended display menus.
That is it.
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