When overclocking customer build, system shut down all of a sudden, won't boot now. #Hackintosh

Hello, as the title states I am overclocking a customer's system. Specs:



AMD Phenom II x4 B60 (x2 unlocked)

MSI GM-e43 MB

10GB corsair Vengeance

Antec 620W PSU *Brand NEW*

GTX 430 (7770 later)

an array of 4 HDD's



Basically I Prime95 tested the system stable at 3.5GHz, but wanted to see if this cpu was stable at 3.7, and during that prime95 run the PC all of a sudden shut off and I haven't been able to restart it. The core voltage isn't yellow or red in the bios (before this issue), so could it be the brand new PSU? Anyone have any ideas?



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