"FATAL ERROR!" ??

Ok ja körde Prime95 i typ 10 min, får ett meddelande om kärna nr. 3

[Sep 24 22:20] Worker starting
[Sep 24 22:20] Setting affinity to run worker on logical CPU #2
[Sep 24 22:20] Beginning a continuous self-test to check your computer.
[Sep 24 22:20] Please read stress.txt. Choose Test/Stop to end this test.
[Sep 24 22:20] Test 1, 800000 Lucas-Lehmer iterations of M172031 using FFT length 8K.
[Sep 24 22:21] Test 2, 800000 Lucas-Lehmer iterations of M163839 using FFT length 8K.
[Sep 24 22:22] Test 3, 800000 Lucas-Lehmer iterations of M159745 using FFT length 8K.
[Sep 24 22:24] Test 4, 800000 Lucas-Lehmer iterations of M157695 using FFT length 8K.
[Sep 24 22:24] FATAL ERROR: Rounding was 0.5, expected less than 0.4
[Sep 24 22:24] Hardware failure detected, consult stress.txt file.
[Sep 24 22:24] Torture Test completed 3 tests in 3 minutes - 1 errors, 0 warnings.
[Sep 24 22:24] Worker stopped.

Vad betyder detta? är det en defekt cpu ja har? Den funkar på alla kärnor vid spel osv... ?