Welcome aboard. From your crash dump:
Code:
Use !analyze -v to get detailed debugging information.
BugCheck 1A, {5003, fffff70001080000, c906, 1943c009}
Probably caused by : ntkrnlmp.exe ( nt! ?? ::FNODOBFM::`string'+29fd7 )
Followup: MachineOwner From
Carrona.org, STOP 0x0000001A: MEMORY_MANAGEMENT
Usual causes: Device driver, memory, kernel
At first, let us start for a faulting driver. In such a situation, it is better to enable Driver Verifier to monitor the drivers.
Driver Verifier - Enable and Disable
Run Driver Verifier for 24 hours or the occurrence of the next crash, whichever is earlier.
Let us know the results, with the subsequent crash dumps, if any.
EDIT: As you got errors in memtest, you should replace the RAM sticks.