Picture jumping from one screen to another

Roughly a month after I connected my laptop, my monitor, and my TV set with thenewly purchased DC 125, ti started to have a recurrent problem: there is a very specific sound (as when you connect a new device) , all the screens go black, the sound repeats, and the picture moves from the TV screen to the laptop scree. After I drag it back to the TV screen, the whole problem repeats, sometimes, with the frequency of two-three times per minute. It is very disruptive and extremely annoying. Please, help.

For the benefit of anyone who is interested-:

After troubleshooting, Alexei figured out that the root cause of the issue was a faulty monitor.