RAM upgrade makes the PC not start

[RatchetSK]

Hello,

I recently bought a RAM upgrade to my PC and suddenly it doesnt want to power up. It lights on and shuts back down after like 5secs and never boots.

My setup:
Asus P6T Deluxe
Core i7 920
Gainward HD 4870x2
1x3 3GB 1066MHz RAM - went to 2x3 6GB 1333MHz
1000W PSU
Antec 1200

After i replaced it with the default RAM i had before, it started just fine. What may be wrong? I really want to upgrade that ram because i went from 32bit to 64bit and 3GB is kinda bottleneck.

Thanks

 

[scout_03]

this board use triple channel memory check if the one you bought is on the qvl list and will work with the first one you already have .

 

[RatchetSK]

I got this http://www.asus.com/Motherboard/P6T_Deluxe/ into this http://ncix.com/products/?sku=36335 so it is compatibile, im sure.

 

[RatchetSK]

somehow it got fixed, for no apparent reason. Im happy though

 

[scout_03]

how did you fix it post the answer it could help others with the same issue .

 

[RatchetSK]

actually i just removed it and installed back, that seemed to work. nothing more

 

[scout_03]

maybe there was one stick that was not well seated in the motherboard slot .