If you can switch to a DVI cable, all your problems will be solved with no loss in image quality. HDMI causes your monitor to behave like a TV, while DVI causes it to behave like a PC monitor. Therefore, with a DVI connection, it will turn off or go into sleep mode only when you turn off the PC.
Yes, I even set the ''Turn of Display'' option to NEVER.
Uh oh, time to look through the display settings for your video card. I would make sure all the cables are hooked up securely as well. Another option is to try to find the drivers for your display and make sure those are updated.
Hmm, interesting fact, when I placed our other monitor from the other computer to my computer, it suddenly worked well and I had no problem, and I put my monitor again with the cable of the monitor that worked and it gave me same error. So it is not a game problem, it is a monitor problem. What do you guys think the monitor problem may be?