My Mac Book Pro wouldn't start after memory update

I updated my 27" Imac memory up to 16 GB, so I was encouraged to do the same with my Mac Book Pro after watching the video and instructions. However My Mac Book Pro wouldn't start afterwards. It is driving me crazy. Please if someone can help me on this. Thanks

I was trying to install Corsair 8GB (2x 4GB) 1333mhz PC3-10666 204-pin DDR3 SODIMM Laptop Memory Kit CMSO8GX3M2A1333C9; and now I realized that I made a mistake because this Mid 2010 Mac Book Pro uses 1066mhz PC3 8500 instead, so should that be the problem of compatibility? I should guess so, although in my HP Elite I have 800Mhz ddr2 where the bus works at 640 mhz ddr2.
The rest is the same being 204 pin memory cards, etc.
I made this mistake because ordered at the same time this memory along with memory cards for my new 27" iMac, which works at 1333Mhz.
Thankyou again, I will check on if cards are sitting well and if they are PC3 8500 1066 Mhz....

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