Question old sapphire crossfirex pure motherboard wont POST with a dgpu in

[mediocreintutto]

on the debug LED it shows that it cycles through a few numbers and then gets stuck to C7 for a few seconds, then cycles again. after a while it stops on "5b/p?" which doesnt seem to be on the manual, the closest i could find to it is 52 but it seems to be completely unrelated. help is appreciated

 

[mediocreintutto]

FIXED - simply had to set the primary video controller to GFX0-IGFX. very silly mistake

 

[COLGeek]

none, but when i first put the 5770 in the 2nd slot for the first time i heard 2

Page 57 of manual indicates a possible memory error for 2 beeps.