I have 5086B-TRF system. All 4 blades work fine and are tested in slot 1 alone. They all POST and are able to go into the BIOS showing correct amount of RAM and CPU. When I populate slots 1 & 2 it works fine (with or without bridge). But when I put a blade in slot 3 it doesn’t POST, even though the blade inside that slot is good.
5086B-TRF system is optimize for 4 CPU (4-way) or 8 CPU (8-way). Please install motherboard either slot1 and slot2 or slot1, slot2, slot3 and slot4. Installation motherboard on this combination slot1, slot2 and slot3 or slot1, slot2 or slot4 is not recommended.