PC won't boot with new RAM despite numbers matching up

I have just installed 2 x 4GB PC4-17000 2133MHz sticks of DDR4 and my computer is acting odd.

The computer will turn on, the lights on my mainboard will activate and my hard drives spin up, and to ear it sounds like it is loading windows but my monitors stay blank. Not even my BIOS is reached unfortunately.

My old 8GB sticks work, but these two new ones don't. I am not trying to run both sets at the same time, but i need to test these 4GB sticks to see if they work for my brother.

Thanks all
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More about boot ram numbers matching
  1. Best answer
    You should check the motherboard maker's website to see if there is any UEFI update available. Also make sure to check the memory compatibility list for your motherboard.
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