I have here a Medion desktop that describes itself as
MODEL: PC MT 14
TYPE: MED MT695G
and on the motherboard there are two identifiers
MS-7633 VER 2.0
What they call the 'MSN' number is 10014064
The problem is that on booting (no post beep) there's no sign of any video signal, either from VGA or HDMI. There's no graphics card, but onboard graphics.
I tried a brand new PCIe 16 graphics card in it and the frustrating outcome was that there was a display for about 10 seconds, never to be seen again.