PC crashing while watching movies/installing TESO

So for the last few days my computer has been crashing and i don't know what to do or how to fix it, any help would be appreciated!! Here is the latest minidump analyzed by http://www.osronline.com/
WHEA_UNCORRECTABLE_ERROR (124)
A fatal hardware error has occurred. Parameter 1 identifies the type of error
source that reported the error. Parameter 2 holds the address of the
WHEA_ERROR_RECORD structure that describes the error conditon.
Arguments:
Arg1: 0000000000000000, Machine Check Exception
Arg2: fffffa8007f85688, Address of the WHEA_ERROR_RECORD structure.
Arg3: 0000000000000000, High order 32-bits of the MCi_STATUS value.
Arg4: 0000000000000000, Low order 32-bits of the MCi_STATUS value.

Debugging Details:
------------------

TRIAGER: Could not open triage file : e:\dump_analysis\program\triage\modclass.ini, error 2

BUGCHECK_STR: 0x124_AuthenticAMD

CUSTOMER_CRASH_COUNT: 1

DEFAULT_BUCKET_ID: WIN7_DRIVER_FAULT

PROCESS_NAME: System

CURRENT_IRQL: 0

STACK_TEXT:
fffff880`031715b0 fffff800`030d2ca9 : fffffa80`07f85660 fffffa80`06c07040 00000000`00000009 00000000`00000000 : nt!WheapCreateLiveTriageDump+0x6c
fffff880`03171ad0 fffff800`02fb3ea7 : fffffa80`07f85660 fffff800`0302d2d8 fffffa80`06c07040 00000000`00000000 : nt!WheapCreateTriageDumpFromPreviousSession+0x49
fffff880`03171b00 fffff800`02f1b275 : fffff800`0308eb40 00000000`00000001 fffffa80`077b4a60 fffffa80`06c07040 : nt!WheapProcessWorkQueueItem+0x57
fffff880`03171b40 fffff800`02e91261 : fffff880`01133e00 fffff800`02f1b250 fffffa80`06c07000 00000000`00000000 : nt!WheapWorkQueueWorkerRoutine+0x25
fffff880`03171b70 fffff800`031242ea : 00000000`00000000 fffffa80`06c07040 00000000`00000080 fffffa80`06b779e0 : nt!ExpWorkerThread+0x111
fffff880`03171c00 fffff800`02e788e6 : fffff880`009b3180 fffffa80`06c07040 fffff880`009be040 00000000`00000000 : nt!PspSystemThreadStartup+0x5a
fffff880`03171c40 00000000`00000000 : fffff880`03172000 fffff880`0316c000 fffff880`03be3740 00000000`00000000 : nt!KxStartSystemThread+0x16


STACK_COMMAND: kb

FOLLOWUP_NAME: MachineOwner

MODULE_NAME: AuthenticAMD

IMAGE_NAME: AuthenticAMD

DEBUG_FLR_IMAGE_TIMESTAMP: 0

FAILURE_BUCKET_ID: X64_0x124_AuthenticAMD_PROCESSOR_BUS_PRV

BUCKET_ID: X64_0x124_AuthenticAMD_PROCESSOR_BUS_PRV