For HP servers, check the Integrated Management Log (IML) via the iLO web console to pinpoint the exact, detailed error code, which often specifies the failing component. 2. Isolate PCIe Devices
journalctl -k | grep -i "machine check"
A real-world case from the University of Toronto demonstrated how persistent MCE errors can be. Their servers started printing an endless series of error dumps to serial consoles with the following signature: x64 exception type 0x12 machinecheck exception link
If the error mentions a specific PCI segment or card, try reseating the PCI Express cards. If the issue persists, remove non-essential expansion cards to rule out a faulty peripheral component. 5. Reset BIOS/RBSU Settings
A mechanism where the CPU reports internal errors (cache, TLB) or external bus errors (RAM, PCIe). Uncorrectable: For HP servers, check the Integrated Management Log
If the error persists after applying all updates and setting the BIOS to UEFI, it may indicate a failed processor or motherboard, requiring a hardware warranty repair.
The bank number in the MCE parameters tells you which part of the CPU reported the error: Their servers started printing an endless series of
This is the most critical diagnostic step. Monitor system temperatures using a tool like HWMonitor (Windows) or sensors (Linux). If your CPU temperature exceeds its maximum junction temperature (often listed as "Tj. Max" or 90-100°C for many modern CPUs) under load, your cooling solution may be failing. Test your Power Supply . If you have a multimeter, you can test the voltages on the PSU connectors (checking for stable 12V, 5V, and 3.3V lines). The easiest method, however, is to install a known-good, high-quality spare PSU and see if the crashes stop.