BSOD while playing ARK Survival Evolved and Battle Field 4

4 drivers have been flagged in the 2nd crash.
The first 2 are from Symantec (norton).
The last 2 are the GPU drivers.
Please uninstall Norton using the uninstall instructions, do NOT install after the reboot.
Please check for driver updates for the AMD drivers, or remove them using the Display Driver Uninstaller and install them again.

Code:

0: kd> lmvm SYMEFASI64
start             end                 module name
fffff800`9e2e0000 fffff800`9e471000   SYMEFASI64 T (no symbols)           
    Loaded symbol image file: SYMEFASI64.SYS
    Image path: \SystemRoot\system32\drivers\N360x64\1605020.00F\SYMEFASI64.SYS
    Image name: SYMEFASI64.SYS
    Timestamp:        Thu May 07 11:44:15 2015 (554B33EF)
    CheckSum:         0018BC7E
    ImageSize:        00191000
    Translations:     0000.04b0 0000.04e4 0409.04b0 0409.04e4


0: kd> lmvm Ironx64

start             end                 module name
fffff800`9f940000 fffff800`9f988000   Ironx64  T (no symbols)           
    Loaded symbol image file: Ironx64.SYS
    Image path: \SystemRoot\system32\drivers\N360x64\1605020.00F\Ironx64.SYS
    Image name: Ironx64.SYS
    Timestamp:        Tue May 05 01:51:42 2015 (5548060E)
    CheckSum:         00052D7F
    ImageSize:        00048000
    Translations:     0000.04b0 0000.04e4 0409.04b0 0409.04e4


0: kd> lmvm atikmpag
start             end                 module name
fffff800`a0250000 fffff800`a02f9000   atikmpag T (no symbols)           
    Loaded symbol image file: atikmpag.sys
    Image path: \SystemRoot\system32\DRIVERS\atikmpag.sys
    Image name: atikmpag.sys
    Timestamp:        Sat Aug 22 03:45:00 2015 (55D7D41C)
    CheckSum:         000B0025
    ImageSize:        000A9000
    Translations:     0000.04b0 0000.04e4 0409.04b0 0409.04e4


0: kd> lmvm atikmdag
start             end                 module name
fffff800`a2d00000 fffff800`a420f000   atikmdag T (no symbols)           
    Loaded symbol image file: atikmdag.sys
    Image path: \SystemRoot\system32\DRIVERS\atikmdag.sys
    Image name: atikmdag.sys
    Timestamp:        Sat Aug 22 04:10:03 2015 (55D7D9FB)
    CheckSum:         014A3688
    ImageSize:        0150F000
    Translations:     0000.04b0 0000.04e4 0409.04b0 0409.04e4

According to the 1st crash there could be memory corruption, or a driver is at fault.

Diagnostic Test

 RAM TEST

Run MemTest86+ to analyse your RAM. MemTest86+ - Test RAM - Windows 10 Forums

   Note

MemTest86+ needs to be run for at least 8 passes for conclusive results. Set it running before you go to bed and leave it overnight. We're looking for zero errors here. Even a single error will indicate RAM failure.