The video card does not work correctly, the screen turns off and flickers, drivers?

Question

HDMI

The problem is this, when idle or playing games, there is a sharp flickering of the screen, connected via a TV and an hdmi cable.
When you open the Nvidia control panel, when you go to sections like screen adjustment, the 3D setting flickers with each transition of the section, if the microwave is turned on at home or the lighting flickers the screen (the image disappears and everything is back as it was)
My PC:
Core i5 4460, DDR3 8GB 1333 (1) , 460 GTX 256 bit 12 pin (the second 6 pin is connected via an adapter), H81 stripped down, 120 SSD, 2TB WD. PSU - 500w
Win 10 PRO latest version.
Where to look?*
1. Not enough PSU power?
2. Is the cable problematic?
3. Did the drivers get up incorrectly?
4. Cap buggy?

Answer 1

It looks like breakdowns in the 220v network
Well, or bp