Just purchased a 3rd monitor since the AMD support page says it supports 3 monitors
I have two benq g2250's with DVI and VGA and.
One benq gl2250H with DVI VGA and HDMI.
If i plug the 3rd monitor in via HDMI i cannot get it to work with the other 2.
Windows screen resolution shows the 3rd minor greyed out and i cannot connect to this display and save the settings.
Do i need to change my cable configuration using some adapters in order to get this working?
You can't in your case. A third monitor is only supported on those 5450 models with a DisplayPort connector.
In short: If you don't have DisplayPort on your card the maximum amount of screens supported per card is two.