Computer crashes when playing Starcraft II

I've been playing Starcraft II on my laptop for a few months now, but this morning, the computer completely crashes, typically a couple minutes into play. The computer doesn't BSOD, it just simply shuts down, instantly. I've attached some logs below (gathered as directed in the BSOD posting instructions), and here's a screenshot of my Reliability Monitor, which shows the crashes. I've already tried updating my graphics driver, but that doesn't seem to have helped. Please help me troubleshoot this, as I'm a little scared that this half-year-old laptop might already be dying, and I can't afford a new one. Thanks!

The logs indicate that there is a hardware error. Digging deeper it looks like the CPU may be overheating or causing a problem. Make sure the fans are working and are free of dust.

Code:

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: ffffa00595549688, 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.

1: kd> !errrec ffffa00595549688
===============================================================================
Common Platform Error Record @ ffffa00595549688
-------------------------------------------------------------------------------
Record Id     : 01d26e6b6d2d5ac0
Severity      : Fatal (1)
Length        : 928
Creator       : Microsoft
Notify Type   : Machine Check Exception
Timestamp     : 1/14/2017 13:38:24 (UTC)
Flags         : 0x00000002 PreviousError

===============================================================================
Section 0     : Processor Generic
-------------------------------------------------------------------------------
Descriptor    @ ffffa00595549708
Section       @ ffffa005955497e0
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   : 0x0000000000660f51
Processor ID  : 0x0000000000000000

===============================================================================
Section 1     : x86/x64 Processor Specific
-------------------------------------------------------------------------------
Descriptor    @ ffffa00595549750
Section       @ ffffa005955498a0
Offset        : 536
Length        : 128
Flags         : 0x00000000
Severity      : Fatal

Local APIC Id : 0x0000000000000000
CPU Id        : 51 0f 66 00 00 08 04 00 - 0b 32 d8 7e 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  @ ffffa005955498a0

===============================================================================
Section 2     : x86/x64 MCA
-------------------------------------------------------------------------------
Descriptor    @ ffffa00595549798
Section       @ ffffa00595549920
Offset        : 664
Length        : 264
Flags         : 0x00000000
Severity      : Fatal

Error         : BUSLG_GENERIC_ERR_*_TIMEOUT_ERR (Proc 0 Bank 4)
  Status      : 0xfe00000000070f0f
  Address     : 0x00000000d3664024
  Misc.       : 0xd00a0fff01000000

I suggest you run a test of your CPU using Prime95. Please follow the instructions in the tutorial carefully and especially the part about monitoring the temperatures and stopping if they get too hot.

Report back on the results.

I've had it running over an hour without problems. The laptop isn't overheating either. I'll keep it running, but what further steps should I take? I recall that my computer installed an update last night. Should I try to uninstall it?

I uninstalled the update, and that didn't work. Then I reinstalled Windows and Starcraft II, and it's still crashing. I'm really not sure what to try at this point.

I just ran the test for 3 hours, with no problems, and I just started it again. It is normal that it is at 3 fps, right? Here's a screenshot:

Attachment 117228

I'm wondering if we are chasing the wrong thing here. You say the crashes are instant and no BSOD shows up. I have been looking at the various BSOD events which may not be connected. The most recent crash dumps for 14th Jan are happening only a few seconds after the session start time and this can be symptomatic of a power supply problem, say a faulty power socket or connection. Did you have problems like this on the 14th?

The earlier crash dump for 4th Jan shows a problem with nbdrv.sys which is a from an Internet traffic control monitoring tool. I would try disabling or removing that software for now. Looking deeper there is also mention of a vboxdrv.sys problem which is the Virtual Box software. Starting with a clean boot may be a useful diagnostic route to eliminate some of the software running on your system.

I didn't have any problems before the 14th, and played almost daily. The system runs fine, being on for hours at a time, except for when I'm playing Starcraft II (I don't play any other games, so the system doesn't really feel much stress otherwise, though). Since reinstalling Windows, it now crashes almost instantly, but only in game. The menus and matchmaking seem to run fine as before. I've had Virtualbox installed for months, without any updates recently. I'll do a clean boot, and then upload the log files again.

Alright. Did a clean boot, and only ran Starcraft II. It still crashed. Here's the logs. (The crash was this morning, on the 18th.)

This was not a BSOD event, there is no crash dump file for the 18th to examine. Something is causing the PC to shutdown. Please fill out your full system specs including the power supply details, hard drives etc.