Sorry for late response. My son need the pc for school work/gaming. However, i did two quick Prime95 tests 1h each (Small FFT/Blend) & Intel's Diagnostic Tool, both no errors/warnings, and intel passed everything. Cpu temp was a bit high (100% cpu maxed at 83c), since son using just a cpu air cooler, without front/exhaust fans. No blue screens of death at all. I attach both prime95 + sys tool infos again in any case.