How long have you waited on blank screen? It can have a hiccup and take a minute or two before it gets into boot screen. Also, do you have a speaker connected to FP header? You can try figure out what's wrong by listening how many beeps it make.
Good ideas. I had speaker connected and there was no sound at all. Let it run for about 2 minutes and there was not even a screen flicker. I got worried that I was cooking the CPU so didn't let it run longer than that.
Update: Supplier provided a refund as tested non-functional. Good that ASUS provided refund. Have now obtained ROG Strix Z690 Wifi D board, but my original RAM doesn't work. Thought it was on the QVL but although it worked with PRIME no good for STRIX, which is disappointing. New boards seem to be very fussy 🙂
Can you run the RAM at a lower speed or even just one stick so you can get the machine running until you can acquire another kit? Sucks to have a paper weight because of memory compatibility.