Motherboard: http://www.asus.com/uk/Motherboards/P5P43TDUSB3/overview/
Ram: http://www.corsair.com/fr-fr/cmv4gx3m2a1333c9
I've been running 2x2gb for a while now, which has worked fine, so recently i decided to buy another 2x2gb which are exactly the same. When i try using all 4, or 3 it doesn't boot. I've tested all slots and they're all fine, i've tested all the sticks by themselves and all the sticks are fine, and it boots if I use 1 of the old sticks with 1 of the new sticks, so they must be fine together, but it just doesn't boot if I use more than 2 sticks.
I recently got a new psu, (http://www.corsair.com/en/cs-series-modular-cs650m-650-watt-80-plus-gold-certified-psu), and i've tried upping the DRAM voltage by 0.6v, but still no change.
Any advice would be appreciated.
Ram: http://www.corsair.com/fr-fr/cmv4gx3m2a1333c9
I've been running 2x2gb for a while now, which has worked fine, so recently i decided to buy another 2x2gb which are exactly the same. When i try using all 4, or 3 it doesn't boot. I've tested all slots and they're all fine, i've tested all the sticks by themselves and all the sticks are fine, and it boots if I use 1 of the old sticks with 1 of the new sticks, so they must be fine together, but it just doesn't boot if I use more than 2 sticks.
I recently got a new psu, (http://www.corsair.com/en/cs-series-modular-cs650m-650-watt-80-plus-gold-certified-psu), and i've tried upping the DRAM voltage by 0.6v, but still no change.
Any advice would be appreciated.
Have some come back a month or two later saying thanks....generally if it doesn't work we here about it fast 
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