Look this way:
If your previous memory works fine, while this new memory doesn't work, then it could be probably the new memory faulty or the motherboard's faulty. You can determine which one of them two that caused system-crashing a.k.a. no-boot by following this way:
So this way, if you have previous old memory (the one that you used before buying this new one) that worked fine, try plug it again now. If the older memory works in a hurrah, then it is faulty new memory; RMA them to the dealer you bought from to ask for new replacement for it. If the older memory also doesn't work, then it's motherboard's fault. We can discuss about setting the memory through the BIOS if this is the case.