It is not showing any cause there.
Code:
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* Bugcheck Analysis *
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Use !analyze -v to get detailed debugging information.
BugCheck 1A, {5003, fffff781c0000000, 52, 54000000a0}
Probably caused by : ntkrnlmp.exe ( nt! ?? ::FNODOBFM::`string'+21ce4 )
Followup: MachineOwner
--------- Disable verifier, and enable it once again, making it sure that you are following the steps proprly.
At the same time, Test your RAM modules for possible errors.
How to Test and Diagnose RAM Issues with Memtest86+
Run memtest for at least 8 passes, preferably overnight, per RAM module per slot.