Win 8 - BSOD - BAD_POOLD_HEADER

Hi, my Win8 just restart every cca 8 hours...everytime there is BAD_POOL_HEADER report.
After restart i got this message (screen) View attachment 10689 Here is the file from Minidump folder...i dont know, where is the problem! :/

Lenovo ThinkPad E330, CPU B970, Intel HD Graphics, 4GB DDR3 RAM, HDD Hitachi - 5400 rpm.

Welcome
It takes severl reports to lead us down the correct trail and you have given us one. That one, however points to your antivirus.
Create a system restore point, uninstall and install Microsoft Security Essentials (Windows Defender)

I just added the remaininngs files, but the Memory.dmp is too large (300MB with no compress) so i upload it on free czech server http://www.ulozto.cz/xG4ezd4/memory-zip just rewrite text and download it btw i am using Avira antivirus, and during install it says someting like...Avira doesn't fully support Windows 8...i hope, someone help me solve it !

Use Windows Defender, its part of your Operating System

Do you think, i should use Defender ? I think Avira with Comodo firewall is much more safer than Defender. But the question is...do i have to uninstall Avira and try another antivirus ? Or just try uninstall Defender and wait for my computer behavior ?

This is what you do
Create a system restore point, so you can go back
Uninstall your anti virus
Install Defender (I use it and its as good or better than any). Now test
If you still get BSODs, keep Defender on until we find the solution
If you do not get BSODs keep it off.

Now i see, i have both Avira and Defender installed. I just uninstall Avira and i will see what happen

You should never have 2 AV installed. Let us know how it works out.