Can you take a picture of the back of your motherboard? Couldn´t find one over the net.
[/https://linustechtips.com/main/uploads/monthly_2019_04/IMG_0331.JPG.e7e596c8f309d43236b8356cd3252cfa.JPG it looks exactly like that one
Will drilling out the rivets damage the board because I don’t want to do that. In the picture someone else mounted a noctura there two.looks like it´s riveted. You will have to drill the rivets to remove the backplate
I don´t think the current backplate is compatible
I would rather remove it so I can use the original mounting hardware wareif you drill carefully, there shouldn´t be a problem.
you can of course try it without removing the back plate 1st
this one used sheet metal screws to fixate the cooler of the Noctua NH-L9x65
https://linustechtips.com/main/topic/1055095-will-it-fit-on-a-hp-3500-pro-motherboard/