Video issue on boot up

[Acegi13579]

I bought a new Dell desktop for my cabinet. I have a 29" Makvision SVGA CRT monitors running off the integrated vga port on the desktop at 800x600. My problem is, when I boot the desktop while it's plugged into the arcade monitor it gives a black screen even when switched from the arcade monitor to a computer monitor; and then the tower immediately shuts off when the power button is pressed like windows hasn't booted at all. But if I boother the computer with the vga cable unplugged and then plug it into the arcade monitor after its finished booting it works fine, or I start it plugged into the computer monitor it boots straight to 800x600 no problem. It's running Windows 10. Any ideas? Thanks.

[obcd]

I think your makvision is missing the small eeprom that computers monitors use to pass the edid information to the computer. That information is used by the computer to determine the optimal resolution of the monitor. If the information is missing, some will simply boot a standard resolution like 640 x 480 or 800 x 600 assuming the monitor should at least support that. Others might simply do what you see on yours. It depends upon the pc mobo bios and maybe the os as well.