When you connect one monitor, it does not work, but when you connect the second, 1 starts working, how to make it so that only 1 monitor works?

Question

Video cards

I bought an adapter from dvi-d to vga and wanted to connect my old monitor, but when connected, it didn’t work, but I decided to connect the TV to the computer via hdmi and, lo and behold, the monitor started working. but when you turn off the TV, the monitor goes blank. graphics card gtx 1050ti.
HELP ME PLEASE

Answer 1

turn on the monitor in the operating system forcibly the
video card does not tritely detect the adapter as a monitor