https://pcpartpicker.com/list/8XXv8K The second one on the list is the new one
What do you need help with? If it's a dead stick send it back.
It's really more optimal to match dimms sticks, especially speeds if possible, however it hopefully would still work. Try testing it separately. Put only the new dimm in (and remove the other), and see if it works. If it doesnt, send it back.
just a question - but did you really pushed it all the way down in the slot? Sometimes it can happen, so naturally it wont get recognized.
Yeah that was it lol
it can happen, glad to help though!