7 hours ago, milesuy said:
I found "Intel® Desktop Board D945PLNM" on the motherboard. This is the only marking I found on the motherboard. So this is a 945 chip?
It only allows me to select PCI or PCIE GPU, I don't think my PC has an iGPU. The BIOS settings are limited.
The board has the Intel 945PL express chipset, and is hard limited to 3.25 GB of memory. The only way to get around it is a different motherboard.