3 Beep when i try to boot Snow Leopard (after memory and sad upgrade)

Good night,
I have a Macbook Pro Later 2011 with Yosemite installed and today i tried to upgrade memory and SSD.
Memory: 16GB 1600MHz DDR3 (2x8) Corsair 11-11-11-30 1.35v
SSD: Corsair 120GB Sata 3 Force GT
After installation of my new gear, i tried to install OS X Snow Leopard through DVD and i get this 3 beep when boot start.
So i reinstalled the original hard drive, keep the new 16gb and started correctly.
Tried boot DVD again with the original hard drive and new 16gb but the 3 beep continues...
Then i removed the 16gb, but still doing this 3 beep stuff when i try boot from DVD.
I tried all combinations with new and old hardware but nothing more works...
I have changed the slots with both, the 16gb and old 4gb.
Could be the DVD corrupted?
Now im running my Yosemite with the original hard drive and the new 16gb memory without any issue.
Im already do the memory test nothing wrong appear in results
My configuration:
MacBook Pro (17 polegadas, Final de 2011)
Processador 2,4 GHz Omte; Cpre i7
Memória 16 GB 1600 MHz DDR3
Gráficos Intel HD Graphics 3000 512 MB
Could anyone help me plz?
ps. sorry for my english

The DVD's too old for that Mac. If you need to install an OS on it, connect it to the Internet and start it up with the Option, Command, and R keys held down.
(110037)

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3 Beep when i try to boot Snow Leopard (after memory and sad upgrade)

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