Nothing wrong with the STB. The receiver is booting then loading the image. The STB is currently in the language selection (Lang) menu and your TV (or HDMI cable) is either not shaking hands properly to set the refresh rate or resolution correctly or the TV input is not correct.
If the TV is confirmed on the correct HDMI port, follow these steps to set the resolution / refresh rate:
Press OK (selects English)
Press OK (selects the HDMI Video connection)
Press OK (selects 720p)
Wait 10 seconds to enter the Start Wizard
You should be seeing an image now, If not, you may need to try a different HDMI, cable, HDMI port or initially connect to a different TV to set the resolution and refresh rate.