Random BSOD / Instability

[xBartGR]

Hey guys =)
I'm writing this thread 'cause i'm getting completely mad.
From 2 weeks my pc is unstable and i can't figure out why.
Here's my configuration: http://it.pcpartpicker.com/list/zdZMZ8

I initally thought it was GPU's fault so i ran DX9, DX10, DX11, DX12 based benchmarks + HeavenBench in loop for 3 hours with no problems at all.

After that i moved on RAM, memtest86 full test (9hours) was flawless.
Formatted changing OS multiple times (W10 Pro x64 / W8.1 Pro x64), Updated Bios to last release, restored defaults and cleared CMOS multiple times. Also ran 30 LinX cycles, with max Ram stress
For 2 days went smooth, but yesterday while playing WoW (like 90% of other BSODs) it crashed again!
BSODs seem to show only when i'm playing (especially WoW in windowed mode) but i'm assuming it's not a load problem, cause bech results are ok, or i'm wrong?
Also yesterday night my pc randomly became ultraslow, not even able to open task manager, i was forced to manually reboot.

I attach memtest results and last crashes dump (i only have that one, sadly i formatted )
Any clues? Help me i don't know what to think anymore

Also, as always sorry for my "not perfect" english, i'm not a native speaker

CrashDumps0719.rar

 

[xBartGR]

For double checking purpose i ran memtest again this night.
9+ hours of testing still shows flawless results...
I think i can exclude RAM on this point, right?

Report:
http://i.imgur.com/a/IiD3c

[xBartGR]

After 3 days of flawless work, today another BSOD show up.
I was playing for about 20 minutes when KMODE_EXCEPTION_NOT_HANDLED.
Here's the dump... no one has any idea?

Dump: https://drive.google.com/open?id=0B5rYCjnZW3whaWd2ME1zN19FOUU