Crashes with "Windows Kernel event ID 41"

[VillePakarinen]

Hi,

For almost a year now, I've experienced random crashes with my self-assembled workstation occurring with varying intervals: sometimes many times a day, sometimes once a day, sometimes a few times a week. In the Windows 10 event log, I've identified the crash to be "Kernel event ID 41" with "npsvctrig" always before it; the screen freezes sometimes accompanied by a buzzing sound straight from the depths of hell.

Stubbornly, I've tried to fix it myself, thinking carrying the thing back to the store would be waste of time. But nothing I've done has yielded a fix; just a temporary calm season before the crash starts occurring again. I've tried:

-swapping the GPU from GTX to AMD Firepro
-the store changed the PSU to a better one to no avail
-stress testing RAM and CPU
-upgrading to Win 10 from 8
-tried different wall plugs in three completely different buildings
-updated BIOS

So, now, while I still have warranty left, I'm taking the machine back tomorrow before leaving on vacation. Before that, I'd just like to check if any informed folks here know what could be causing this. My specs:

OS: Win 10 Home 64-bit
Mobo: Asus X99-DELUXE with latest BIOS
CPU: Intel i7-5820K with Noctua NH-D15 heat sink
RAM: 32 Gt Kingston HyperX FURY Black DDR4 2666 Mhz (4 x 8 Gt)
GPU: AMD FirePro W7100
Hard drives: 2x WD Green 4TB in RAID 1

SSDs: Samsung 850 PRO 256 Gt for OS, Samsung 850 EVO 1 Tt for temporary work files
PSU: Corsair RM750 80 PLUS Gold

Thanks for any advice!