I have an old pc that has a motherboard called "Pegatron IPM31" with two slots for ddr2 ram, an intel celeron processor, and 1GB ram-800. I got another 1GB-667 for it, and here is what happens: - If I use the old ram in any of the two slots, no problem. - If I use the New ram in any of the two slots, the PC powers up, nothing on screen (But not with errors like if no ram or ram damaged). - If I use both, the PC powers up, OS boots, everything is okay except that bios & OS recognize only 1GB ram.
Memtest+, CPU-Z, and similar tools recognize that the each slot has 1GB ram with 2048 MB total throw DOS, or even on Windows!!
The new ram works fine in other PCs.
I searched over the internet, and I found some guys talking about ram voltage, but there is nothing in this bios setup like this!!
- No bios update can be found.
- Removed the Cmos battery >> nothing changed.