BSOD randomly appears with IRQL NOT LESS OR EQUAL

There were 5 bugchecks in the latest zip and all were bugcheck A: IRQL not less or equal.
It the comments from the testing it seems you got the same result with replacement of the PSU.
Did the technician provide any calculations to indicate that 600 Volts was insufficient for the computer's requirements?
Did the technician use a meter to test the various voltages? Were they within thresholds?
Was the graphics cards swapped?
Did this computer's graphics card work well in another computer? Were there no BSOD or were there BSOD in the other computer?
Did a replacement graphics card work well in this computer or did a replacement graphics card BSOD in this computer?
Were temperatures tested with each graphics card in each computer?
Were display artifacts evaluated for each graphics card?
Was freezing evaluated for each graphics card?
What were the stress test durations?

Were you given any of the above information from the technician or can you get it so it can be reviewed in the thread?
Did the technician use Windows driver verifier?

This is a summary of the bugcheck in the logs:
113..............Video Dxgkrnl fatal error
3B................System service exception
C2................Bad pool caller
139..............Kernal security check failure
D1 ..............Driver IRQL not less or equal
162 ............Kernel auto boost invalid lock release
A .................IRQL not less or equal
19 ...............Bad pool header
F7 ...............Driver overran stack buffer
001 ............PEB is paged out
9C ..............Machine check exception

Sorry for late update.
1. Got back my GTX970 from EMTEK. This time, they gave me another same model. Ran PC few days but still BSOD's exists.
2. It was private repair shop and pc vendor. (many PC vendors and service center in that district) Thought it was easily figured out but didn't work. He didn't use any device you mentioned. (calculating, voltage check)
First, he thought problem cause by M/B or Ram. But I explained M/B is replaced one and Ram is recently tested in service center. Then he ran 'OCCT', test didn't even started, then says PSU is the problem. But as I posted, changed PSU but still got same situation.
3. My mistake were didn't trying other GPU in my pc or my GPU to other pc when I visited, but 3GPU(GTX970, GTX1060, GTX970) are under same BSOD situation, so don't want to think they gave me all malfuncitoned GPUs to me.
4. Recently, got bsods named IRQL NOT LESS OR EQUAL, VIDEO DXGKRNL FATAL ERROR. And here's latest dm log.Attachment 165298

The BSOD mini dumps were debugged.
There was 1 recurrent misbehaving hardware driver.
The Nvidia drivers have had multiple replacements with 3 different versions.
The latest BSOD was with version 23.21.13.8831 and this version had already produced BSOD.

Please find a friend, neighbor, relative or local computer store to swap the Nvidia graphics card.
Test the card in another computer > does it BSOD, freeze, have display artifacts or temperature problems?
Test another graphics card in the problematic computer > does it BSOD, freeze, have display artifacts or temperature problems?

nvlddmkm.sys

Code:

Name	NVIDIA GeForce GTX 970PNP Device ID	PCI\VEN_10DE&DEV_13C2&SUBSYS_13C210DE&REV_A1\4&25438C51&0&0008Adapter Type	GeForce GTX 970, NVIDIA compatibleAdapter Description	NVIDIA GeForce GTX 970Adapter RAM	(1,048,576) bytesInstalled Drivers	C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_c791f781cd94491f\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_c791f781cd94491f\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_c791f781cd94491f\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_c791f781cd94491f\nvldumdx.dllDriver Version	23.21.13.8831INF File	oem4.inf (Section110 section)Color Planes	Not AvailableColor Table Entries	4294967296Resolution	1920 x 1080 x 60 hertzBits/Pixel	32Memory Address	0xDE000000-0xDF0FFFFFMemory Address	0xC0000000-0xD1FFFFFFMemory Address	0xD0000000-0xD1FFFFFFI/O Port	0x0000E000-0x0000EFFFIRQ Channel	IRQ 16I/O Port	0x000003B0-0x000003BBI/O Port	0x000003C0-0x000003DFMemory Address	0xA0000-0xBFFFFDriver	c:\windows\system32\driverstore\filerepository\nv_dispi.inf_amd64_c791f781cd94491f\nvlddmkm.sys (23.21.13.8831, 16.20 MB (16,989,296 bytes), 11/24/2017 11:03 AM)