Hi and Welcome to SF
The minidump you uploaded both pointed to memory corruption, I would download third party called memtest86, burn it to CD using Iso Recorder and let it run for at least 6,7 passess
http://www.carrona.org/memdiag.html
Bugcheck:
Code:
BugCheck 1A, {41790, c08020b0, ffff, 0}
Probably caused by : memory_corruption ( nt!MiDeleteVirtualAddresses+41a )
Followup: MachineOwner
---------
BugCheck 1A, {41790, c0802760, ffff, 0}
Probably caused by : memory_corruption ( nt!MiDeleteVirtualAddresses+41a )
Followup: MachineOwner
--------- Stop code 1A can be
drivers issue or memory, let's do the memtest86 first, if the result is no error, then we will get to the bad drivers
~Tuan