All your minidumps crash with memory corruption, and a bugcheck of 1E.
0x0000001E: KMODE_EXCEPTION_NOT_HANDLED
The Windows kernel detected an illegal or unknown processor instruction. A Stop 0x1E condition can be caused by invalid memory and access violations similar to those that generate Stop 0xA errors. This default Windows error handler typically intercepts these problems if error-handling routines are not present in the code itself.
It does look like you have a ram problem.
Check that your system isn`t overclocked in any way.