Hi Oussebon, thanks for the reply. i have just used the DDU in safe mode and installed the most recent (431.36) and then done it again with the oldest version i could see on the Nvidia Gforce website (419.17) from February.
unfortunately no luck there.
To add aswell i did a system restore back...
Been running the same setup for over a year now with 1 HDMI going to a 4k tv and 2 DP to HDMI adapters go 2 different 1080p displays and everything has worked fine, the DP could overheat a little from the card when under heavy load but that is all.
Suddenly i booted my PC yesterday and now none...