Computer does not recognize RAM

Apr 15, 2018
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I bought 2 new rams ( F3-1866C9D-16GXM DDR3 8GX2) , BEFORE , i was using : Vegeance corsair 1x4gb ddr3 1600mhz , and a kingston 4gb ( i dont know the speed or timing of the kingston)
So i was using those 2 rams and it worked pretty well , but was only 8gb in total so i bought the other 2 new rams .
So the problem is when i insert the 2 new rams my computer turned on but the screen was black , and every one minute the computer rebooted itself .
What i did was , with just one ram i tested every memory slot and it worked , but with 2 rams , again i tested in every slot with the 2 rams and nothing ...
I updated the bios , so its up to date , and i put different timmings but again nothing ...

My computer specs are : motherboard asus h81 gamer
i5 4460
gtx 1050ti

Please help me im done with this problem.

ps sorry for bad english im portuguese :)