Thus first memory in '0'
second in '1 '
third in '2 '
So if you think that the third '0' is duff then things should go on 0 & 1 but will be limited to these two.
If this is not so then the damage may be deeper in on the MoBo than you realize or memory is damaged also.
So start with slot '0' and put one stick in, at a time and is that fires up- go for slot '1' with other memory and so forth
Process of elimination really