looks like pre 2011 usb 3.0 controllers are a little iffy with the kinect2PC
ms support suggested controllers with intel or renesas chipsets - so i bought an $8.56 (shipped!) expresscard on ebay that has renesas drivers, hopefully that will get things working
probably time to buy a new notebook though… : )
ms forums posted a partial list of working (and not working) controllers here
i really often had usb-issues and lots of them caused by insufficient powersupply.
active displayport->DVI duallink adapters which made use of USB only for powersupply reasons.
after lots’n’lots of hours testing i noticed that during startup of Windows, when the graphics adapter tried to evaluate its connected devices, the adapter’s current demands suddenly increased from 0mA to 340mA und few seconds later back to 0 mA , then again 340mA and so on for 3 or 4 times.
this is quite a task for the regulation circuits in switched power supplies.
it turned out that it was essential for the device evaluation to fulfill the power demands immediately.
the solution was kind of simple: an external USB-hub (no link to the pc needed) with a WAY OVERDIMENSIONED powersupply-adapter (something like solid 5V 3000mA)
also i recommend not to trust mainboards manufacturer’s specs about current/USB too much.
recently i stumbled upon a very nice free tool by microsoft that provides very detailed information about all your USBstuff:
good practice after installation of itchy devices that ask for OS restart:
do not restart, but
*disconnect mains cord
*switch computer on
*look at any visible LEDs on mainboard etc. to make sure that
*all Capacitors are completely discharged
*connect mains again
and wonder about how easy life can be…