First time builder. Continuous beep error

[kePasaa]

I hope you guys can help me.
I have not been able to perform a first boot. My system is:

Intel Core i5-3570K 3.4GHz Quad-Core CPU
Cooler Master Hyper 212 Evo CPU Cooler
Gigabyte GA-Z77X-UD3H Motherboard
XFX HD 7970 3GB Video Card
8GB Kingston HyperX RAM
OCZ ModXStream Pro 700W PSU

i was going to perform my first boot but the motherboard starts beeping continuosly (like 30 short/fast beeps) and on the screen (panel) of the motherboard i see the number "51"
i would really appreciate your help. thank you.

I think I posted it in the wrong forum sorry lol

 

[TheBigTroll]

go to the manual and search up error codes and find the one that you just saw. check this as well

- did you slot your memory into the slots properly?, they should make a good loud click when

 

[envy14tpe]

Reseat the memory. Usually it's the first culprit. Also, if its only 2 DIMMs that you are filling, make sure you put the RAM cards into the right slots.