I am trying to overclock Athlon II x4 640 quad core but no matter how slight of an overclock I give it the computer won't boot. It exits the bios then restarts but the fans and LEDs just turn on for a second then the computer shuts off immediately and I need to clear CMOS and reset the bios to default. Before installing the x4 640 I had the same setup but with an Athlon II x2 245 duel core. I have tried underclocking the ram as well as the northbridge multiple times to see if I could get it to boot but no success cool and quiet is disabled as well.
My exact setup is:
CPU - AMD Athlon II X4 640
Motherboard - ASRock 880GM-LE
Memory - Kingston HyperX FURY 8GB Kit (2x4GB) 1333MHz DDR3 CL9 DIMM
Power Supply - Rosewill Photon-750, PHOTON Series 750W Full Modular Power Supply, 80 PLUS Gold Certified, Single +12V Rail, Intel 4th Gen CPU Ready, SLI & Crossfire Ready
GPU - EVGA Nvidia GeForce GTX 760
I have seen multiple threads about overclocking this processor so I know its possible but I can't even raise the FSB speed up to 205 from 200 and get it to boot.
I have also tried swapping out the ram as well as removing one of the sticks and trying it in both slots separately and I get the same result.
My exact setup is:
CPU - AMD Athlon II X4 640
Motherboard - ASRock 880GM-LE
Memory - Kingston HyperX FURY 8GB Kit (2x4GB) 1333MHz DDR3 CL9 DIMM
Power Supply - Rosewill Photon-750, PHOTON Series 750W Full Modular Power Supply, 80 PLUS Gold Certified, Single +12V Rail, Intel 4th Gen CPU Ready, SLI & Crossfire Ready
GPU - EVGA Nvidia GeForce GTX 760
I have seen multiple threads about overclocking this processor so I know its possible but I can't even raise the FSB speed up to 205 from 200 and get it to boot.
I have also tried swapping out the ram as well as removing one of the sticks and trying it in both slots separately and I get the same result.