Black Screen of Death or Black Gaming Screen of Death

That's a text file not a dump file, i need the raw dump files, and if there is no dump file being created please check to ensure that they are being created upon crashing:

Dump Files - Configure Windows to Create on BSOD

If you find that your computer is already configured to create dump files then there is a definite problem indicating that the computer is crashing so hard it doesn't have time to create a dump file.

If you get another crash please upload the dump file if one is created by running the SF Diagnostict tool again and zipping and uploading the folder it creates here, in the mean time I have asked others to take a look at this thread.

I think you need to verify the temperatures of the system while running a stress test, i know you believe it is a driver error and it may well be but the type of errors coming from the dump files suggest a hardware error, i would start with a monitored stress test while keeping an eye on the cpu temps

Run prime again with temps on show and see how they rise, if they go up too quick/high then abort the test

From your two dump files I observe:

Code:

 
3: kd> !errrec fffffa8008925038
===============================================================================
Common Platform Error Record @ fffffa8008925038
-------------------------------------------------------------------------------
Record Id     : 01ce475c64645785
Severity      : Fatal (1)
Length        : 928
Creator       : Microsoft
Notify Type   : Machine Check Exception
Timestamp     : 5/2/2013 17:42:27
Flags         : 0x00000002 PreviousError
===============================================================================
Section 0     : Processor Generic
-------------------------------------------------------------------------------
Descriptor    @ fffffa80089250b8
Section       @ fffffa8008925190
Offset        : 344
Length        : 192
Flags         : 0x00000001 Primary
Severity      : Fatal
Proc. Type    : x86/x64
Instr. Set    : x64
Error Type    : Micro-Architectural Error
Flags         : 0x00
CPU Version   : 0x00000000000106a5
Processor ID  : 0x0000000000000000
===============================================================================
Section 1     : x86/x64 Processor Specific
-------------------------------------------------------------------------------
Descriptor    @ fffffa8008925100
Section       @ fffffa8008925250
Offset        : 536
Length        : 128
Flags         : 0x00000000
Severity      : Fatal
Local APIC Id : 0x0000000000000000
CPU Id        : a5 06 01 00 00 08 10 00 - bd e3 98 00 ff fb eb bf
                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  @ fffffa8008925250
===============================================================================
Section 2     : x86/x64 MCA
-------------------------------------------------------------------------------
Descriptor    @ fffffa8008925148
Section       @ fffffa80089252d0
Offset        : 664
Length        : 264
Flags         : 0x00000000
Severity      : Fatal
Error         : Internal timer (Proc 0 Bank 5)
  Status      : 0xfe00000000800400
  Address     : 0x00003880068fac3b
  Misc.       : 0x0000000000007fff
-------------------------------------------------------------------------------

Both of the crashes from your logs point to the same issue:

An internal CPU timer failed, every time it's during Processor 0 activity (CPU Core),
every time it's also using the same CPU cache bank (Bank 5).
This may or may not be CPU related, so first you should go to your manufacturers website and
download and update both your BIOS (which dsprague has suggested) and any drivers related to
your motherboard. They will most likely show up as chipset or CPU drivers.
If that does not fix the problem, then it maybe a possibility the CPU is failing.

Also you have an excessive amount Registry tweakers installed, Windows 7 does not require such cleaners and they may do more harm than good.
REMOVE THESE PROGRAMS and any other such utilities installed:

Code:

 
Glary utilities
Tweak now registry cleaner
Tweak now registry cleaner 2012
Tweaking.com\Simple system tweaker
F Cleaner

   Note

Windows is a closed source system. Developers of tuneup utilities and registry cleaners do not have the core code of Win 7 and are not working on definitive information, but rather they are going on past knowledge and experience, most of which is not applicable to Win 7.
There is almost no tweaking that can be done to Win 7 to speed it up. The system is designed to diagnose itself and take care of itself which it does remarkably well. Win 7 maintains itself and that includes the registry.

Cheers
Dave

I would keep the latest version, then monitor your computer and see if issue remains.

Incidentally, have you tried seeing if the issue exists in safe-mode?

Boot into Safe-mode

cheers

Dave