just experienced the craziest thing ever.
got a brand new xps 12 and a brand new nexus 4.
every time i tried to connect to the hotspot set up with the nexus i got a bluescreen
(very nasty!!!! you expect the cutting edge hardware to have not troubles performing last year's technology.)
anyways, i resolved the issue following istructions given here
- Device Manager
- Network adapters
- Intel Centrino Advanced-N 6230 (your wireless card)
- Wiress Mode
- 2. 802.11b
maybe the reason fot this issue also applies to your problem (even though my issues were exactly the other way around...)
hope this helps.