It seems quite a few people have the “constant orange light”-issue, me included. I’m rather new to Oculus and the DK2, I’ve only tried a few things (reinstalled OS once before first install, reinstalled drivers, rolled back and forth graphics drivers, tried on another PC). Have you seen this thread over at Oculus Dev forum? https://developer.oculusvr.com/forums/viewtopic.php?f=34&t=12012
For me, it was working fine until the next reboot of the PC. I haven’t tried reinstalling the OS yet another time, as I just did that, but I installed it on another laptop and then suddenly it worked on that laptop, and later also on my own computer – Until the next reboot! (well, power-down / up cycle). This is where I’m at now (I’ll get to try and install it again on the laptop later (it’s not my laptop), but I don’t really hold much hope for it at the moment.. Might just wait for a firmware or driver update before I try fiddling with it again – if I can wait that long that is).