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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 15.40.26.4474, 15.40.25.4463, 15.40.22.4424 i 15.40.10.4300). 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.

  • I would update all the intel drivers using windows update or intel.com – Moab Aug 7 '16 at 22:05
  • Once I didn't blocked automatic update for drivers from Windows Update, Windows installed graphic driver (dedicated to Iris Pro 6200, not just the default one) directly after restart and that driver also had a problem with non-paged pool. The rest of drivers is up-to-date. I updated them via Snappy Driver Installer. – JERICHO Aug 7 '16 at 22:16
  • I have little faith in 3rd party driver updaters. – Moab Aug 7 '16 at 22:51
  • I used SDI once or maybe twice to check if it's responsible for this, but all drivers from SDI and Intel website cause the problem. I also wrote the drivers versions i installed from Intel website, so i'm sure that drivers from both sources cause the same problem. – JERICHO Aug 7 '16 at 23:18
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    Not exactly. It seems driver can't allocate more than 512MB of RAM for iGPU. If you choose more than 512MB, there'll be memory leak. When i choosed 1GB, Task Manager showed about 630MB 'Hardware Reservd' memory. Now on 512MB chosen in UEFI Task Manager shows 593MB 'Hardware Reserved'. – JERICHO Aug 10 '16 at 8:37
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In my case it was problem with allocating too much RAM to iGPU so driver couldn't handle it. It seems driver cannot allocate more than 512MB VRAM. I wanted more VRAM for games and i created this problem by accident.
I fixed this by going to UEFI, then to "Integrated Peripherals" and i changed RAM assigned to iGPU to 512MB and memory leak disappeared.

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If you using WPF and you change a lot of graphic elements then some graphic drivers have problems (e.g. from Siemens IPCs)

You can solve it with the RegistryKey described here

http://geekswithblogs.net/JeffFerguson/archive/2010/01/24/wpf-video-drivers-and-video-memory-leaks.aspx

Greetings - Ralf Schiessl, ib-comPLAN

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    Welcome to Super User! Please quote the essential parts of the answer from the reference link(s), as the answer can become invalid if the linked page(s) change. – DavidPostill May 4 at 15:21

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