Code:
BugCheck 9F, {3, fffffa8017575a10, fffff80000b9c3d8, fffffa8018d44a10}

Unable to load image nvlddmkm.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for nvlddmkm.sys
*** ERROR: Module load completed but symbols could not be loaded for nvlddmkm.sys
Probably caused by : ACPI.sys
Code:
Usual causes:  Device driver
Code:
0: kd> !irp fffffa8018d44a10
Irp is active with 4 stacks 2 is current (= 0xfffffa8018d44b28)
 No Mdl: No System Buffer: Thread 00000000:  Irp stack trace.  
     cmd  flg cl Device   File     Completion-Context
 [  0, 0]   0  0 00000000 00000000 00000000-00000000    

			Args: 00000000 00000000 00000000 00000000
>[ 16, 2]   0 e1 fffffa801756d9d0 00000000 fffff8800f62a5bc-fffffa801b73abf0 Success Error Cancel pending
	       \Driver\ACPI	nvlddmkm
			Args: 00000000 00000001 00000001 00000000
 [ 16, 2]   0 e1 fffffa8018554480 00000000 00000000-00000000    pending
	       \Driver\nvlddmkm
			Args: 00000000 00000001 00000001 00000000
 [  0, 0]   0  0 00000000 00000000 00000000-fffffa801c1ce160
Stop 0x50 also occured pointing to your graphics driver, here is the summary of usual causes for the particular crash:

Code:
Usual causes:  Defective hardware (particularly memory - but not just RAM), Faulty system service, Antivirus,  Device driver, NTFS corruption, BIOS
Scan for any missing, modified or corrupted protected Windows files with:

Overclocking -

I recommend if you are overclocking any hardware, that you reset these values within the BIOS to their default values in order to increase the stability of your system.

Run Memtest86+ for least 9-10 passes, and preferrly overnight as it can take a while to fully complete.

Test each RAM stick individually, if an error is found then move the same RAM stick into the next DIMM slot and test again, if errors are found for the same RAM stick in every available slot then you have a faulty RAM module. On the other hand, if no errors are found in the next slot or the other slots for the same RAM module, then you have a faulty DIMM slot.

Test each RAM stick and every motherboard DIMM slot available.

Check for any driver compatibility issues with:

Test the Power Supply/Video Card -

Read all the steps within the hardware test tutorials very carefully, as stress tests is designed run components to their maximum capacity, in order to point out failing or faulty hardware components.

Use the following program to monitor your hardware temperatures during the stress test:

Check for any overheating issues, by posting a screenshot of your idle and load temperatures.