My asus monitor was plugged into my laptop by vga, and now its plugged into my desktop pc by hmdi, but it says no vga signal?

[clindsey_]

I have an asus vs247h-p monitor and it was plugged into my laptop by vga, now it is plugged into my ibuypower desktop pc by hdmi but the monitor says no vga input found

 

[Tradesman1]

Check the monitor for a way to change the input source from VGA to HDMI, should be a menu