Machine Check Exception 000000000000004 AND CPU context corrupt
I have a working dual Xeon system that I was trying to upgrade to higher speed CPUs.
IWILL DP533 motherboard (533 MHz FSB)
Dual 2.4 GHz Xeon Processors
1 GB RAM (2 memory sticks)
System has been working fine with the two 2.4 GHz CPUs. I do a fair bit of computational work, so I was going to upgrade the CPUs to 3.06 GHz, add more memory, etc. I purchased a "matched set" of CPUs off of ebay (yes - one takes their chances here).
The CPUs just arrived the other day and looked in good shape. I installed them, they started to boot, then the boot crashed with the following messages.
CPU1: Machine Check Exception 000000000000004
CPU0: Machine Check Exception 000000000000004
Kernel Panic - not syncing: CPU Context Corrupt
I went into BIOS and changed to the safe/default settings. This set the CPU speed at abut 1.6 GHz. I had initially tried to boot up with a multiplier that gave a 3.06 GHz speed, that is when I got the above error. It would still NOT boot when I slowed it down to 1.6 GHz.
I did use thermal compound when installing the CPUs to insure good contact with the heat sinks. Once I removed those 3.06 CPUs and reinstalled the 2.4 CPUs the system booted without a problem.
All of this seems to me to indicate that the CPUs are not a matched set, or have issues ... particularly since I can put other CPUs back into the system and get it to work.
Thoughts? Comments? Suggestions? I am going to put one of the CPUs back in at a time and see if the 3.06 CPUs will boot one at a time. Then I will see how the BIOS monitors their temperature as they sit there, just to make sure the heat sink/fan combination is providing adequate ventilation.
Thanks in advance for any comments.