BBB-W HDMI (does not work)

Good afternoon!
Tell me how to include the output of the graphic screen (desktop) on the HDMI output on the board?
The HDMI cable was connected to the TV - there is no signal on the TV.
On the board I boot from the flash card, I downloaded from the site a version with a graphical interface.

Diskmbstel and Nehalohar,
It could be a hardware issue, try squeezing the uHMDI port closer to the rest of the Beaglebone. If that fixes it, what I’ve done is use a large paper clip as a vise. It’s not elegant but it gets the job done.