Machine check exceptions are frequently caused by one of the following conditions:
* You are running the processor or mainboard beyond its specifications. For example, you are overclocking the processor or bus. We recommend that you run your hardware at the manufacturer-rated speeds.
* Noisy power, overstressed power strips, outmatched power supplies and failing power supplies can destabilize your computer. Make sure that you have a stable, reliable power supply to your computer.
* Extreme thermal conditions caused by the failure of cooling devices such as fans may damage your computer. Make sure that your cooling devices are all working.
* You have damaged memory or memory that is not the correct type for your computer. If you recently changed the memory configuration, revert to the previous configuration to determine what is wrong. Make sure that you are using the correct memory for your computer.
Any chance you could try another power supply, it may have enough juice, but it may be giving out a dirty signal...high noise from poor filtering etc...
I would also check your system temperatures...something may be overheating enough to cause the MCE but not enough to shut it down...
You could also try your setup with a few of your extra devices removed...there's a lot of stuff that wants to "spin up" when your system does a refresh of the drives...
