Hello guys, I'm at a loss for words as to what is happening to my hardware. Back in January 2011, I got my 2600k and P8P67 Evo. Upgraded from Q9550 & P5Q-Pro All was fine and dandy until February 11th, my computer simply shuts down during a CS 1.6 match, and never turned on again. The symptoms were as follows: - Computer shuts down out of the blue, does NOT power on. - Green LED on mobo, no power on at all. Fans spin for a 1/4 of second, but nothing happens. RESULT: Dead motherboard, AND as I found out on March 30th when I got my revision B3 Evo, also a dead 2600k CPU (there were no mobos to test it with during the recall, but it died together with the mobo). Also, at the time of this first hardware failure, I had a mid-range 700w PSU, and I upgraded to a Corsair TX650 just to be on the safe side. It has been my PSU since March. Bear in mind, my computer went dead during the P67 and H67 recall, due to the Intel bug thingy, so I was without a functional computer until March 30th 2011. Then, I got a B3 P67 Evo. Flashforward to last sunday: Same thing happens, not during CS 1.6, but during 3Dmark Vantage this time. SAME SYMPTOMS: Computer shuts down, no power on, fans spin for a fraction of a second. Turns out, dead mobo and CPU again :/ Hardware tested at my local store where I bought the stuff. Exactly the same problem. Both CPU and mobo die at the same time with no apparent reason. When it happend for the fist time in February, I didn't think too much of it, I thought it was maybe just a bad mobo that died and took the CPU with it. Now I'm worried, because it happened a second time, with the same symptoms. For the record, my OC on the 2600k during both times was (IMO) an extremely harmless one: - 2600k @ 4.2ghz with 1.24v under LOAD, with offset vcore set with MINUS 0.45v - All other voltages, except RAM, were on AUTO - RAM was running @ 1600mhz with stock timings 9-9-9-24 @ 1.55v - C3 and C6 states were DISABLED, EIST and all other power options were ENABLED. Rest of my system specs: CPU Cooler: CM TX3 (the main reason my OC was so gentle). Besides, 4.2ghz is NOTHING for a 2600k. PSU: Corsair TX650w RAM: 2x2 + 2x2 Kingston HyperX 1600 CL9 1.65v (they run at stock speeds @ 1.55v) GPU: Sapphire HD 6870 Bottom line: So guys, I'm really baffled by all this. Am I doing something wrong? This is the second RMA I go through since January... I really need help. You may laugh, but I'm actually SCARED of overclocking now, since my hardware has died on me, and it has never happened before. I am an experienced OCer, and honestly I don't think I'm doing anything wrong. But since it has happened 2 times now, I can't just be coincidence, right? :/ Opinions? I really need help. I can't figure out what's killing my hardware. Please don't forget that BOTH the CPU and the Mobo die at the same time. PC shuts down, never to turn on again. Also, I've ruled out PSU causes, since the first time and this last one happened with 2 different PSUs. One with my previous PSU, and now with my trusty Corsair TX650.