Difference between vga monitor and tft

[amitgayan]

Hello,
i am having a old PC with VGA black and white monitor. I tried a colour crt monitor with that PC and observe that the monitor is working normal. but when I connect a TFT with that PC, it does not support. My question is that when a colour monitor can work, why the TFT is not working.

 

[benski]

Do you have a really old PC that only has an analog VGA output? Perhaps the TFT only supports digital video input.