Random Bsods - IRQL_NOT_LESS_OR_EQUAL

Hello,

I'm having some problems with random Bsods after upgrade from windows 7 to 10 (not clean install).
I did clean reinstall of most of the drivers 1 by 1 to try and track down what's causing the issue without any luck.
First i thought problem was Xonar STX driver because there was no official Win 10 version (including UNI drivers), after that i did clean reinstall of Nvidia drivers and some other peripherals.

Bsods still happen at complete random, even when there is no stress on cpu or gpu.
Some crash dumps points out to portcls.sys which is part of sound drivers, some to cng.sys which is part of kernel.
I have no idea what else i can do.

Any suggestions are more than welcome.
Thanks :)

Hello and thanks for reply.

I did as you suggested. Removed SPTD drivers and some other old unnecessary drivers + some leftover *.sys files.
Bought external HDD to keep my crap from when i'm used to work with 3dmax and was just too lazy to move somewhere else, so there's more than 200gb free space on D partition now.

Just to look for more driver issues i ran a "Verifier" and the only issue found was "cmudaxp.sys not digitally signed" which is part of C-Media / Asus xonar drivers. As of now there are no updates available for it... Asus and/or c-media are really slow to update their stuff for windows 10.

Looks like system is stable with uptime ~24hrs+

I'll mark this as solved and thanks for help :)