I bought the CV1. In the installation after: Set your view in VR (Continue in your headset) I put it on and it is black. I hear the sound, but doesn't see anything.
I tried to reinstall it a couple of time.
The DK2 worked fine for me. Never had problems.
I have a asus r9 295x2(4 mini displayports and 1 dvi-d) 3 Monitors on 3 mini displayports and the rift is now on the 4th minidisplay port with an adapter (https://www.digitec.ch/de/s1/product/club-3d-aktiver-mini-displayport-zu-hdmi-15cm-data-video-adapter-5640004
)...also tried a dvi-d -> hdmi adapter.
My motherboard is a bit older: ASUS P6T SE...so I have USB 2.0.
Windows 7 64 bit.
The light in the rift is now orange (not blinking). But it also was white (also not blinking).