From my experience i have came across to weird things regarding amt with DQ45CB or DQ45EK Intel Desktop Boards. My main conclusion was that this board is very peaky with memory and power supplies.
Corsair power supplies (Builder Series) exhibit the worst compatibility track. Again Memories other than Kingston sometimes lead to boot-up issues.
One thing i want to ask you. You said that these boards are new never used. Do you have a Production number which lies on the boards itself or on the sticker on the box? I just want to check the bios version that this boards of yours came from the factory.
I'm not sure where the numbers are located on these boards but I assume this is what you are looking for:
AA E30148-301 x2
We have tried 2 different power supplies but we will try more and different RAM today. Just keep posting possible solutions if anything comes to mind, thanks!!
According to Official Intel DQ45CB_SpecUpdate07 these are the following board revision and accompanying Bios versions that left Production Line:
AA Revision BIOS Revision Notes
I don't know of any AA E30148-207 Production number but anyway. Can you try to put board on recovery mode and flash with the latest bios v0.133 if I am correct. A lot of problems were caused with stuck AMT Modes or Different than normal Ram Voltage.
I would recommend you try only Kingston ValueRam Dimms DDR2-800MHz CL5 or CL6 whatever you find available. Start with 2*1GB on Primary channel and try to flash its board to the latest bios.
A last notice that I want to make. P4 or Pentium D's are not on Intel Compatibility List for these particular boards. I don't know why (they are Socket 775 Yes I Know) but Intel is Listing 84 Processors for these boards and those you mentioned are not in the list:
In fact, fsofos replied back with the correct answer, these motherboards are really picky with the power supplies.
Please bear in mind that this motherboard is end of interactive support, so it's no longer supported by Intel®, but my suggestion is to try as fsofos mentioned before a BIOS recovery method to update the BIOS first.
After getting our new boards today we have finally figured out what the problem was!! After the new boards weren't booting we finally tried a Pentium D from one of our work computers. All the boards old and new booted up fine! The problem was that, as far as I can tell, the DQ45CB board does not support either single cores or Pentium 4's.
I am a bit puzzled though, I swear one of these boards was running a Pentium 4 just fine but I may be wrong. I would like to know if the board does support P4's or whether there is a BIOS update to support these. Any further information would be helpful!
But as stated, Pentium 4's DO NOT work, but the Pentium D's do! Thanks again!
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As i said earlier P4 or Pentium D's are not on Intel Compatibility List for these
particular boards. I don't know why (they are Socket 775 Yes I Know) but Intel
is Listing 84 Processors for these boards and those you mentioned are not in the
Since the board is EOL and EOS there will be NO NEW Bios updates to add any support or correct a bug to this board.