Question pc turns on but doesn’t boot

Apr 8, 2019
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so i recently bought a bunch of new parts, i bought
i7 950
gtx 950
msi x58 proe mobo
coolermaster 212
3 4gb ram sticks gskill sniper
600w evga psu
i put it all together and it doesn’t display, i’ve tried my old ram sticks, i made sure they were in the right memory slot too, i reseated everything and still nothing, someone please help