BSOD randomly when surfing, netflixing.

Please help.

My HP duo core keeps restarting randomly while we browse the internet or while we watch movie on netflix. First I suspected it was the memory. I got 4 chips total to 8 GB. I started taking them all out and start using one stick at a time on different memory slots. Tested all and still kept restarting. I never get the blue screen. The computer just shutdown without warning. My OS is Windows 7 Home. Please help. If you need more details of anything, I'll get it to you promptly.

Thank you so much in advance.

Code:

BugCheck 124, {0, fffffa8003359788, 0, 0}

Probably caused by : AuthenticAMD

Code:

0: kd> !errrec fffffa8003359788
===============================================================================
Common Platform Error Record @ fffffa8003359788
-------------------------------------------------------------------------------
Record Id     : 01cecda9e3f73846
Severity      : Fatal (1)
Length        : 928
Creator       : Microsoft
Notify Type   : Machine Check Exception
Timestamp     : 10/20/2013 15:34:44 (UTC)
Flags         : 0x00000002 PreviousError

===============================================================================
Section 0     : Processor Generic
-------------------------------------------------------------------------------
Descriptor    @ fffffa8003359808
Section       @ fffffa80033598e0
Offset        : 344
Length        : 192
Flags         : 0x00000001 Primary
Severity      : Fatal

Proc. Type    : x86/x64
Instr. Set    : x64
Error Type    : BUS error
Operation     : Generic
Flags         : 0x00
Level         : 3
CPU Version   : 0x0000000000100f52
Processor ID  : 0x0000000000000000

===============================================================================
Section 1     : x86/x64 Processor Specific
-------------------------------------------------------------------------------
Descriptor    @ fffffa8003359850
Section       @ fffffa80033599a0
Offset        : 536
Length        : 128
Flags         : 0x00000000
Severity      : Fatal

Local APIC Id : 0x0000000000000000
CPU Id        : 52 0f 10 00 00 08 04 00 - 09 20 80 00 ff fb 8b 17
                00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00
                00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00

Proc. Info 0  @ fffffa80033599a0

===============================================================================
Section 2     : x86/x64 MCA
-------------------------------------------------------------------------------
Descriptor    @ fffffa8003359898
Section       @ fffffa8003359a20
Offset        : 664
Length        : 264
Flags         : 0x00000000
Severity      : Fatal

Error         : BUSLG_GENERIC_ERR_*_TIMEOUT_ERR (Proc 0 Bank 4)
  Status      : 0xfa00000000070f0f

Okay, this error seems to be very generic indeed. BUSLG points to Generic Memory Hierarchy level; the Participation from which processor is also generic; the type of request is also considered Generic (ERR), and the reason for the error is the request timed-out and wasn't completed.

The error is so generic here, since the CPU can't determine the type of request which caused the error.

Run the Small FFT's, Large FFT's and Blend Test for a few hours each; do not let the temperature exceed 80*C.

• Hardware - Stress Test With Prime95

Enable "Round off checking" before the test (see first post below tutorial).

• 
  Stop 0x124 - what it means and what to try

All the hardware seeming to be running stable and tests reporting no errors, could mean a bad motherboard.

Thank you so much for your diagnostic. Will start testing as suggest and will report back. Thanks again!

Will look forward to the results :)