Blue Screen nightmare since getting new CPU, Motherboard and RAM.

I recently got a new CPU (AMD FX 8350 4ghz), Motherboard (ASUS M5A97) and RAM (Corsair Vengeance 8gb DDR3 PC3-12800C9 1600MHz).

I constantly got blue screen errors (most often WHEAR_UNCORRECTABLE_ERROR and SYSTEM_SERVICE_EXCEPTION) and when testing with prime95 I immediately got "ILLEGAL_SUMOUT possible hardware failure" on 2 cores of the CPU.

Sometimes I could go 3 or 4 hours (of playing games, streaming video, browsing, photoshop etc) with great performance and no problems. Then I'll go do a simple thing like watch a youtube video, and get a blue screen. So it's hard for me to pinpoint if any one thing is causing this.

I returned the CPU, and was told they'd tested it and found it to be faulty. They sent me a brand new one (I checked the serial number, it was definitely not my old one) and yet the very same errors still occurred. The exact same cores gave the same "ILLEGAL_SUMOUT" error again and again.

I've never done any overclocking on any part of my system. I'm using a third party cooler and I've never seen my CPU go over 61 degrees.

I've already updated my bios to the latest version, and left all settings as default.

I've since had to get a new hard drive due to getting NTFS_FILE_SYSTEM errors on my old one whilst trying to reinstall Windows in the hopes of fixing these errors.

Installing Windows on the new drive has allowed me to at least get IN to Windows, although now if I try running Prime95 or any other kind of tests, I immediately get a CLOCK_WATCHDOG_TIMEOUT bluescreen.

I've had Memtest86+ running for hours with zero errors, so it seems the RAM is fine.

I've uploaded the minidump to my Skydrive since the latest bluescreen and will update this post with any others that I get.

EDIT Just tried another Prime95 test, and received this on core 6:

[Aug 28 22:13] Worker starting
[Aug 28 22:13] Setting affinity to run worker on logical CPU #6
[Aug 28 22:13] Beginning a continuous self-test to check your computer.
[Aug 28 22:13] Please read stress.txt. Choose Test/Stop to end this test.
[Aug 28 22:13] Test 1, 6500 Lucas-Lehmer iterations of M12451841 using AMD K10 type-2 FFT length 640K, Pass1=640, Pass2=1K.
[Aug 28 22:13] FATAL ERROR: Rounding was 0.4931640625, expected less than 0.4
[Aug 28 22:13] Hardware failure detected, consult stress.txt file.
[Aug 28 22:13] Torture Test completed 0 tests in 0 minutes - 1 errors, 0 warnings.
[Aug 28 22:13] Worker stopped.

And this on core 8:

[Aug 28 22:13] Worker starting
[Aug 28 22:13] Setting affinity to run worker on logical CPU #8
[Aug 28 22:13] Beginning a continuous self-test to check your computer.
[Aug 28 22:13] Please read stress.txt. Choose Test/Stop to end this test.
[Aug 28 22:13] Test 1, 6500 Lucas-Lehmer iterations of M12451841 using AMD K10 type-2 FFT length 640K, Pass1=640, Pass2=1K.
[Aug 28 22:14] FATAL ERROR: Rounding was 0.48046875, expected less than 0.4
[Aug 28 22:14] Hardware failure detected, consult stress.txt file.
[Aug 28 22:14] Torture Test completed 0 tests in 1 minutes - 1 errors, 0 warnings.
[Aug 28 22:14] Worker stopped.


It is always these two cores that give the errors (the same ones on the previous CPU, also - which leads me to believe something is amiss elsewhere rather than the actual CPU itself)

Here is the latest minidump