My PC randomly crashes while playing games such as Resident Evil 2, and it occasionally crashes while idle as well. The latest crash analysis reports a WHEA_UNCORRECTABLE_ERROR (bug check 0x124) generated by an Intel processor machine-check exception. It mentions an unknown processor hardware error, corrupted processor context, and suggests the CPU or related power and thermal hardware may be involved. I do not overclock or undervolt the CPU or RAM. I did reapply the thermal paste, which seemed to improve things temporarily, but the crashes eventually returned. What should I check to determine whether the problem is the CPU, cooling, motherboard, power delivery, BIOS, or something else?
2 Answers
The fact that new thermal paste helped temporarily makes cooling or cooler mounting worth investigating, although it does not prove the processor is defective. Check temperatures with a hardware monitor and look for sudden spikes or thermal throttling. Also inspect the cooler contact and make sure any protective film was removed. Test the system with the case airflow improved and BIOS settings fully stock. If temperatures are normal but 0x124 crashes continue, test the RAM sticks individually and try a known-good power supply before replacing the CPU.
A 0x124 WHEA crash usually points to hardware instability rather than a normal driver problem. Start by loading the BIOS defaults, making sure XMP or any automatic performance profile is disabled temporarily, and updating the motherboard BIOS. Then monitor CPU temperatures and clock behavior while gaming. Check that the cooler is mounted evenly, the pump or fan is working, and the CPU power cables are firmly connected. If possible, test with another power supply or use separate power cables for the graphics card. Run a memory test and separate CPU stress tests; if the crash happens during CPU testing even at default settings and safe temperatures, the CPU, motherboard, or power delivery becomes much more suspicious.
I have not changed any CPU or RAM settings and never intentionally overclocked or undervolted anything. I reapplied the thermal paste, which gave me a longer period without a crash, but the problem came back.