7.7 installation results in black screens

[no1tmorrow]

My pro 3 has worked great with a display port to hdmi adapter off of my dock and a usb 3.0 to dvi adapter off of my dock (plugged into usb 2 not the SS ports) until this morning. Now only one will work at a time. Either the usb dvi adapter will work or display port, not both. I already have the newest Microsoft files and tried downloading the intel files but they would not let me install them. Any permanent fixes?

Thanks
Thom