Moniter turning on and off constantly

For starters, you need to tell us:

1. Exact PC model
2. Version of Windows
3. Exact monitor model
4. Do you have an add-in video card or only have onboard Intel Graphics?
5. What video port used on monitor and what video port  used on PC?
6. If you have add-in video card, is monitor connected to the card or to onboard Intel Graphics?

And tell us if you're an AI bot trainer.