I just did this. I had to restart several times because the netbook doesn't display anything until after Starting Windows comes up on the tv.
The tv doesn't display the screen to press F2 to enter the BIOS. It took me several attempts to get the restart and F2 press co-ordinated.
The BIOS appeared only on the tv screen. I arrowed to all the sections then exited saving changes.
There were no changes and HDMI is still not appearing in playback devices.