All three of your minidump errors are code 0x0000001A: MEMORY_MANAGEMENT
This memory management error is usually hardware related.
Two of the dumps simply cite the driver that Frank mentions as the probable cause. This is a Windows OS driver and usually these are too general to be of much diagnostic help.
The third dump. however, gave the probable cause of your system crashes as memory corruption and thus we recommend you run Memtest on your RAM.
See the link below and follow the instructions. There is a newer version than what is listed; use the newer. If you need to see what the Memtest screen looks like go to reply #21. The third screen is the Memtest screen.
Step1 - Let it run for a
LONG time. The rule is a
minimum of 7 Passes;
the more Passes after 7 so much the better. The only exception is if you start getting errors before 7 Passes then you can skip to Step 2.
There are 8 individual tests
per Pass. Many people will start this test before going to bed and check it the next day.
If you have errors you have corrupted memory and it needs to be replaced.
Step 2 – Because of errors you need to run this test per stick of RAM. Take out one and run the test. Then take that one out and put the other in and run the test. If you start getting errors before 7 Passes you know that stick is corrupted and you don’t need to run the test any further on that stick.
Link:
https://www.techspot.com/vb/topic62524.html
* Get back to us with the results.
*** If Memtest shows no errors then find the voltage specs of your RAM and compare it to the voltage setting in your BIOS. Do they match?