Windows 10: new cpu bluescreen

so i got my new cpu ryzen 5 3500 from ryzen 3 2200g and my motherboard asrock a320m-hdv bios p6.20.i install my new cpu it should support cause the newest bios and after i insert the cpu i look the status from bios and its read my cpu after that i continiue . it just said please wait asrock logo and i tried evertyhing restart cmos and i even try reisntall windows 10 and make blue screen but if i try again with my old cpu its fine nothing wrong any suggestion?sry bad english

:)

 

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:

 

[FS][US] CPU, NForce4 skt 754 motherboard (with PCI-express slot, rare!), DDR RAM

bump, CPU's stepping is now listed.

 

INCORRECT CPU FREQUENCY READING

Hello Muhammad,

CPU usage depends on the applications that are open to your device. To isolate the problem, we suggest that you answer the following questions:

• Can you include a screenshot of the CPU reading?
• Have you tried performing a
  clean boot to eliminate software conflicts?
• What troubleshooting steps have you done so far?

Looking forward to your response.