This has been running fine for quite a few months and recently under load it will reboot without notice. I can get it to reboot everytime if I try to backup my dvd movies using handbrake. I ran memtest for 16 hours with no errors, stresstest for many hours without errors as well. I loaded linux fresh on a newly formatted drive and it fails right away. I did back up over 130 dvds fine but any now fail with a reboot. I have had reboots just browsing the web. The only error messages I see in any logs are:
kern.log:Oct 22 11:09:49 jmwebe2-GA-78LMT-S2P kernel: [ 11.486233] [Hardware Error]: MC4 Error (node 0): Link-defined sync error packets detected on HT link.
kern.log:Oct 22 11:09:49 jmwebe2-GA-78LMT-S2P kernel: [ 11.486236] [Hardware Error]: Error Status: System Fatal error.
kern.log:Oct 22 11:09:49 jmwebe2-GA-78LMT-S2P kernel: [ 11.486239] [Hardware Error]: CPU:0 (15:2:0) MC4_STATUS[-|UE|MiscV|PCC|-|-|-]: 0xba00001000020c0f
kern.log:Oct 22 11:09:49 jmwebe2-GA-78LMT-S2P kernel: [ 11.486241] [Hardware Error]: cache level: L3/GEN, mem/io: GEN, mem-tx: GEN, part-proc: OBS (no timeout)
kern.log:Oct 22 11:09:49 jmwebe2-GA-78LMT-S2P kernel: [ 11.486245] [Hardware Error]: MC6 Error: Physical Register File parity error.
kern.log:Oct 22 11:09:49 jmwebe2-GA-78LMT-S2P kernel: [ 11.486247] [Hardware Error]: Error Status: System Fatal error.
kern.log:Oct 22 11:09:49 jmwebe2-GA-78LMT-S2P kernel: [ 11.486249] [Hardware Error]: CPU:0 (15:2:0) MC6_STATUS[-|UE|-|PCC|-|-|-]: 0xb200000000020e0f
kern.log:Oct 22 11:09:49 jmwebe2-GA-78LMT-S2P kernel: [ 11.486251] [Hardware Error]: cache level: L3/GEN, mem/io: GEN, mem-tx: GEN, part-proc: GEN (no timeout)
I don't know what the cause is and need help figuring it out. Any ideas?