Thanks to the answer in this thread I found out that my Intel GPU driver is causing memory leak (4.1GB of non-paged pool). I tried to install various versions of driver and this problem comes back every install of drivers. On Windows 10 default driver non-paged pool is 110MB, but when I start installing driver it comes back to 4.1GB (screen goes black for a second during install and it's 4.1GB non-paged pool again). I tried installing driver from Snappy Driver Installer and from official Intel website (Beta 188.8.131.5274, 184.108.40.20663, 220.127.116.1124 i 18.104.22.16800). The result was the exact same every single time.
I was reinstalling the driver in this way:
1. Went to Safe mode
2. Uninstalled driver using Display Driver Uninstaller (from guru3d.com)
3. Restarted to Win 10 normal mode (every time i restarted the non paged pool was about 110MB)
4. Started installation of driver
5. During installation screen went black and non-paged pool was 4.1GB again.
Any thoughts how to fix this?
PS. If this may have something in common with what happens, I reduced my system partition size to 250GB (via Partition Master, because built-in system tool didn't let me reduce this partition as much as I wanted) and soon after graphic driver crashed (screen even didn't go black IIRC, just information about crash showed up). I also updated my drivers via Snappy Driver Installer, but I don't remember if it was before or after the driver's crash.