BSOD - Multiple Instances, 0x3B & 0x4E

[Algapaf]

Hi,

I've been getting random BSODs, which I cannot reproduce.
I've run memtest86 for 12 hours, stress-tested my GPU, CPU and HDD, none of which gave me an explicit error.
I'm not overclocked, temps are 40 when idle and 75-89 under heavy load.
Could someone give me a hand identifying the problem ?
Thanks in advance.

Minidumps included
https://www.dropbox.com/s/0w94vrwl7tgpr9a/Desktop.zip

 

[Algapaf]

Oh, and verifier brought nothing up.

 

[Algapaf]

Awkward bump :/

 

[Algapaf]

Still no one ? :/