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I bought a DFI Lanparty board used (Ultra D modded to SLI with AMD 3800x2 cpu) combo and I can't seem to get it to detect the 4 gigs of ram that is in it (4x 1gig Corsair sticks). Well it seems something is wrong with slots 3 & 4 on the board. It doesn't seem to be the ram itself because I have switched them all around and I have the same problems.
Here are the issues/symptoms:
1. Only about 3.4 gigs of ram are detected by the bios (except after the very first boot after a CMOS reset then all 4 gigs are shown).
2. I can't just install one stick of ram in either slot 3 or 4. The system won't boot.
3. Memtest reports memory errors at the same address range regardless of what order the sticks are mounted on the board. (I need to double check this again)
4. I can't add only 1 stick of ram to either slot 3 or 4 if both slots 1&2 are filled.
Things I have tried:
1. Switched ram around to different slots.
2. Reset the CPU.
3. Attached the molex and FDD power connectors to the board for extra power.
4. Reset CMOS several times
5. Raised the voltage to the ram in the bios (defaults to 2.6v, I've tried 2.7v and 2.8v)
6. Replaced the CMOS battery.
7. Cleaned the gold fingers of the ram and the slots.
Like mentioned above, 4 gigs of ram will show in the bios after a CMOS reset but after I exit out of the bios and the system reboots only 3.4 gigs are shown.
Questions:
1. I read online that the memory controller is inside the CPU is this true?
2. Assuming number 1 is true, how can I tell if the problem is with the motherboard or the CPU?
3. Which settings in the DRAM config in the bios control all the timing settings? (Memtest says the ram is 3-3-3-7, the bios says it is already at '2T').
Thanks!
Here are the issues/symptoms:
1. Only about 3.4 gigs of ram are detected by the bios (except after the very first boot after a CMOS reset then all 4 gigs are shown).
2. I can't just install one stick of ram in either slot 3 or 4. The system won't boot.
3. Memtest reports memory errors at the same address range regardless of what order the sticks are mounted on the board. (I need to double check this again)
4. I can't add only 1 stick of ram to either slot 3 or 4 if both slots 1&2 are filled.
Things I have tried:
1. Switched ram around to different slots.
2. Reset the CPU.
3. Attached the molex and FDD power connectors to the board for extra power.
4. Reset CMOS several times
5. Raised the voltage to the ram in the bios (defaults to 2.6v, I've tried 2.7v and 2.8v)
6. Replaced the CMOS battery.
7. Cleaned the gold fingers of the ram and the slots.
Like mentioned above, 4 gigs of ram will show in the bios after a CMOS reset but after I exit out of the bios and the system reboots only 3.4 gigs are shown.
Questions:
1. I read online that the memory controller is inside the CPU is this true?
2. Assuming number 1 is true, how can I tell if the problem is with the motherboard or the CPU?
3. Which settings in the DRAM config in the bios control all the timing settings? (Memtest says the ram is 3-3-3-7, the bios says it is already at '2T').
Thanks!
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