Windows 10: New Motherboard Bluescreen

Installed a new Motherboard after the old one went DOA and now I'm hit with Bluescreen after Bluescreen with many different error codes from PAGE FAULT IN NONONPAGED AREA to NOT LESS OR EQUAL to CRITICAL PROCESS DIEDand many moreIt used to work long enough for me to sort of use, but now it won't stay on longer than a minute.

:)

 

New Windows 10 PC Bluescreens when idle

I have a brand new build, Windows 10, Asus Z170-P motherboard, 12gb corsair ddr4, GTX 950, 1TB hard drive. Whenever I leave it idle it seems to bluescreen. This can happen after 20-30 minutes or not for an hour or more. Usually when I'm using it actively playing games it is fine. The bluescreen bug check string is various things from MEMORY_MANAGEMENT, IRQL_NOT_LESS_OR_EQUAL, BAD_POOL_HEADER and a few others.

The minidumps for all the recent bluescreens are here:
Minidump.zip

Things I've tried:

• Updating all my drivers, particularly the asus chipset drivers
  
• Running Memtest overnight (7 passes in 9 hours, no issues found)
  
• chkdisk (via windows 10 tools)
  

I really am stuck now. I took it back to the store where I bought all the parts and they said they tested it and it's all fine (they updated the chipset drivers again even though I had already done so) and for them it was running for 2 hours with no bluescreen.

If anyone has suggestions I'd be really grateful because I've run out of ideas!

UPDATE

Memory timings from CPU-Z added below:

 

Asus Z370 Maximus X Motherboards

The 9th gen processors that are currently available is still the P0 stepping and will eventually be replaced with the new R0 stepping processors.

Here are the screenshots I took from Gigabyte's website




Gigabyte redacted the new R0 processors from the list a day later.

 

Choice of memory and motherboard... a bit stuck...

No one who got some suggestions on this one, huh?

I've found out that the Asus M3A78-T needs to be flashed, so then that motherboard is excluded from my list. Which motherboard and memory should I then go for? Any suggestions?