I presume on the 1050 Ti card you did plug the six pin Pci-e 12v power some of the cards need to work properly.
It`s very easy to miss the six pin Pci-e power connector on the 1050 Ti card as it is often tucked under the shroud of the cards cooling solution.
It`s either that or you have not connected the four or eight pin EPS 12v power connector that goes directly from the 430W Psu you have.
If the eight pin, or four pin 12v Eps connector has not been connected the result is the card is not detected in the Pci-e Graphics card slot of your motherboard.
The same also applies to if the six pin 12 Pci-e power connector from the Psu is not directly connected to the 1050 Ti graphics card Joseph.
You need to go back and check both of the two power connectors where you will find one or the other has failed to be connected since you fitted the 1050 Ti card.
Top right in the center picture, the six pin 12v Pci-e power connector for the 1050 Ti card, click on the link to see the picture of the graphics cards circuit board.
https://www.google.co.uk/search?q=1050+ti&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjAmp3umZDSAhXCVhQKHcYqBZ0Q_AUICygE&biw=1707&bih=845#imgrc=_HNBcRBbwS5tdM:
The 12v Eps power is four pins in black, top most part of the motherboard in the picture link bellow.
https://www.google.co.uk/search?q=B250M+PRO-VH&source=lnms&tbm=isch&sa=X&ved=0ahUKEwimjIHRnJDSAhUqLcAKHcYLCswQ_AUICSgC&biw=1707&bih=845#imgrc=OH5VrVjpsuKG2M:
You will be good to go then with no black screening of the system while it`s running, or the card failing to be detected in the Pci-e graphics card slot of your motherboard Joseph ok.