Is it the right pins? If it isnt the ports for it might be broke, but if it fit in fine this is most likely not the case.
And did you try using one stick at a time to test? Or you might have gone over the amount of RAM your motherboard can handle, that could be it.
How much ram did you have before and after?
Heres an example. The motherboard has two slots for 8 GB RAM, it wont work right if you try to put 8 GB in one slot, it has to be spread equally in both slots. I hope you can understand this.
And did you try using one stick at a time to test? Or you might have gone over the amount of RAM your motherboard can handle, that could be it.
How much ram did you have before and after?
Heres an example. The motherboard has two slots for 8 GB RAM, it wont work right if you try to put 8 GB in one slot, it has to be spread equally in both slots. I hope you can understand this.