For more information check logfile (this log file might be there or might not be, it depends how it is configured in /etc/mcelog/mcelog.conf) where should be detail description of the problem found.
or just run command
Mcelog is decoding kernel machine check log on x86 machines. From
X86 CPUs report errors detected by the CPU as machine check events (MCEs). These
can be data corruption detected in the CPU caches, in main memory by an integrated
memory controller, data transfer errors on the front side bus or CPU interconnect or
other internal errors. Possible causes can be cosmic radiation, instable power
supplies, cooling problems, broken hardware, or bad luck.
Most errors can be corrected by the CPU by internal error correction mechanisms.
Uncorrected errors cause machine check exceptions which may panic the machine.
When a corrected error happens the x86 kernel writes a record describing the MCE into
a internal ring buffer available through the /dev/mcelog device mcelog retrieves
errors from /dev/mcelog, decodes them into a human readable format and prints them on
the standard output or optionally into the system log.
You can find more information about mcelog and its configuration/errors/triggers on the project webpage Mcelog project webpage