Black bars on the screen

Guys help me, I don’t know what to do, when I start playing games, black bars appear on the screen and the picture breaks after about 5 minutes of playing, there is an adapter on the monitor with a video card (vga-dvi), I read on the forums that this problem can arise due to the adapter, but the problem is described as follows: translucent stripes and the picture twitches a little, in principle, the problem is solved by replacing the monitor and directly connecting the cable without an adapter. Some users advise changing the video card, the fact is that I changed the video card 3 times, there were just transparent stripes, I had to put up with it, so to speak. Some time later, this problem began with black bars, it is impossible to play! the other day I checked the surge protector to which the monitor was connected, the ends of the plug were slightly melted + when you insert the plug into the socket it sparks a little and when I pull it out too. So, can you give me some advice on what to do? Here I took a picture of the screen, previously I did a screen shot when there were stripes all the rules.