Pro 14 Premium PA14250, screens are going black?

Hi All, 

Wonder if anyone is having this issue with Dell Pro 14 Premium PA14250?

Screens are going black at random, completely black only mouse cursor can de seen. Only way to get arround this is by holding the power button for 15sec. No ctrl alt del, nothing, disconnecting from the Dell USB-C dock no go, same happens on Lenovo USB-C dock's to. I have about 5 laptops with this issue atm and all Dell Pro 14 Premium PA14250 model. I am checking log files atm but just wondering if anyone has seen this and got fix?