Asus P5G41T-M LX 1x4GB DDR3 1333Mhz RAM Problem

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Hello everyone. I am reading TH for a while but this is my first thread. First my specs:

Asus P5G41T-M LX MoBo

Intel Core 2 E 7500@3.53GHZ MoBo Auto O.C. (FSB 1066)

1x2GB DDR2 800 Kingston RAM(old,no problems) 1x4GB DDR3 1333Mhz Corsair Ram(Problem)

What I do know:

My MoBo supports 1333mhz as O.C. So I need a FSB of 1333 to run it at that frequency but my CPU has a slower FSB.

I can run a 1333mhz RAM at 1066mhz.

So I came back to my room after happily purchasing this ram, knowing nothing about fsb, I opened up my 9 years old case and took my DDR2 RAM off.Then I spent some time trying to put the DDR3 RAM inside( I installed it to the black slot). I succesfully installed my RAM and was happy to see my performance in BF3 increase, also thanks to my new GTX 650 Ti. After all that hard work I pressed the power button and... nothing came up. I tried several times but nothing happened(BIOS).

So what is the solution? I want to run this DDR3 RAM and can not send it back atm. Can I run my old memory with this( DDR2 in blue DDR3 in black) and somehow config the DDR3 to run at 1066 and have some nice 4GB RAM ? :)

Thanks for your help.