550BE wont stay unlocked

Just as the title says, my 550 BE wont stay unlocked. Since my fourth core is bad I have it set to force tri core, sometimes it will boot up with 3 cores, sometimes it wont unlock at all (ACC still enabled). Any ideas?

Overclocked to 3.4GHz, doesnt make a difference without it.
BIOSTAR TA790XE custom firmware
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More about 550be wont stay unlocked
  1. Just because you can unlock it, dont mean it will run, or stay there. These a defective quad cores not a bonus do it yourself quad for way less $$$
  2. Have you confirmed with stability testing that the CPU is completely stable in that setup?
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