PC wont boot after adding RAM

I just purchased 2x 4gb kingston hyperx DDR3 1866 and tried installing it (everything was unplugged) and my pc continuously shuts off and turns back on every 3 seconds or so.
Gigabyte GA-z87 HD3
Intel i5 4670k
crucial 2x 4gb ddr3 1600

I've combed through quite a few threads of similar issues with no luck. I've checked all the RAM slots and they work. I took the cmos battery out and restarted the bios. From what I've read I think its because the sets of sticks I bought are different speeds. Any solutions that don't involve me buying/returning RAM?

Post was last edited on August 29, 2018 5:52 PM PDT

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Clarification Request
The usual test.

1 stick at a time. Do all sticks let the machine work? If not, the sticks that don't let the PC work, what are they?

Mixing is just not a good idea. Too many issues can arise so don't mix.

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Remove the old ram.

Put one stick of the new ram in the proper slot as shown by the manual.

Does the machine boot?

If so add the second stick of the new ram in the proper slot as shown by the manual.

Does the machine boot?

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Thanks for the suggestions. I got my machine running with all 4 sticks. I booted into bios with the new ram and lowered the frequency to 1600 then shutdown and added the old ram and it booted and accepted all 4.

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