DZ68BC Memory Problem - Update
The problem I am having is definitely tied to using two sticks of memory. As noted before, either stick in any of the for sockets works fine. With two sticks installed in either the blue or black lanes, the system will go to the Intel splash screen, pause for about ten seconds and shut down.
I received a recommendation to try setting the advanced memory settings to XME-1600 mode 1, which did not help, nor did changing the voltage from +1.5000v to +1.5500v. I'm still at a loss as to what is happening. My next step will be to default the bios and roll the system back to bios 0039.
RemoNonaz, I was able to read both threads and it looks like you already performed all the required troubleshooting.
You can try reinstalling BIOS v0039 and check if the behavior persisted.
You can also test different memory sticks that compliant with the specifications given on the following link http://www.intel.com/support/motherboards/desktop/dz68bc/sb/CS-032688.htm
I've been working on this for the past hour. I looked at the advanced memory settings, but I don't believe they are an issue. Default or custom-1600 should be fine. Defaulted bios - this had no effect. I downloaded bios 39 and put it on my bootable thumb drive. Itwon't load. The drive flashed: one long, three short, four short, pauses and starts over. I had seen this before on the way to bios 42 but figured out it was because I was in back-to-bios mode. When I shut it off, the bios load worked correctly. Today I did not make that mistake. Back-to-bios was off. I tried shutting off the power, removing the cmos battery and repeating the bios load process without success.
I'm at a loss as to what to do next.
OK, some success!!
I tried an F7 bios load and was successful in loading bios 0039. The system appeared to operating normally on 4gb of memory other than the ! was back in the system manager for Intel Managment Engine - this is normal for bios 0039. I installed the other memory module and the system booted normally. I checked the system settings again, the ! had cleared (also normal), but the system was only showing 4gb of memory.
A check if the bios showed 4gb in dimm 1, channel A, no memory in dimm 2. I shut the system down and swapped the memory. Again I showed 4gb in dimm one, channel A, no memory in dimm 2. I shut the system down and swapped the memory into channel B. On power up, the system would not start and gave repeated 3-beep memory error codes. I moved the memory back to channel A and restarrted. This time the memory showed up in both dimms and was confirmed in Windows.
The system is not well, but it seems as healthy as it was a week ago before going to bios 0042.