Question Two identical monitors but one is flickering black ?

Oct 21, 2020
I have two identical monitors, one connected via HDMI and one connected via VGA. The VGA monitor started flashing to black and back like it was turning off and on randomly but the power light doesn't change. I tried switching the input to DVI but the issue persists. I assume it's not an issue with the PC since it's only affecting the one monitor. The tower only has one HDMI input or I would try running both monitors off HDMI. Any suggestions?

OS = Windows 10