Kinect 1 in Windows 8

Windows 8, Kinect 2 public installed (working), Kinect 1 runtime 1.8 installed.
The Kinect 1 does not work, when I try to open a Kinect node the IR emitter does not turn on, the green led is blinking normally.
Any idea?

No problems here with kinect1 and kinect2 (latest sdk) on 32.1
win 8.1

win 8.1 pro 64 32.1 k1 1.8 no problem here

SOLVED: I had installed only the runtime when you need to install the SDK.