Hello,
I am in the middle of putting together a system with a DZ77GA-70K and a i7-3770K.
When I power-up the system, I get beeping (three beeps) and post code 48 appears on the LED display. Ostensibly, this is a memory error (according to the Integration Guide), but I have tried two different pairs of modules (DDR3-1600 and DDR3-1333, both 2x 4GB) in slots 1 & 3 (the blue ones).
According to the DZ77GA-70K Technical Product Spec documentation, the post code corresponds to "Refresh memory space attributes according to MTRRs", but it's not much help.
Can anyone suggest what to do next?
By the way, I did double-check the power supply connections, jumpers, switches, motherboard contact with the backplane, etc.
---Mark