A buddy of mine built a new system the other day (not too long ago). And he decided to overclock the CPU (specs below). The problem: Every time he starts the PC from the "dead" mode (shut-down), he gets a POST error depicting "CPU fan error, press F1 to continue." Although he simply press reset, and then he's good to go (no problems whatsoever). But having this error popping up every time he starts the PC is very annoying for him, and it costs him some seconds every time, which'll add up in the long run. Details: Starting the PC from sleep-mode will not cause this error. The CPU fan is OK, he can see it moving when he has started the PC. His PSU's power-coefficient is very high (like 850W+), and it's a "fancy" model (like those from Corsair). Specs. (if insufficient, let me know, and I'll ask him for more specs ) Motherboard: Asus Crosshair Formula IV CPU: AMD Phenom X6 #### (unknown model number) CPU-fan: Corsair H50, basic water-cooling/fan rig. Edit: The CPU is not overclocked by much as per say, possibly only a few hundred MHz, btw.