I've got a Foxconn Renaissance motherboard, and I'm using the newest supportable version of BIOS, 6GB memory, 2GB memory on my GTX760 graphics card, and WIndows 7 x64,
Unfortunately, there's no option to enable memory remapping, which is causing me a really strange problem. After about a week of fiddling with the settings, I've determined that the only way for my new graphics card to work is to truncate the memory in the bcdedit settings.
After trial and error I determined that truncating at in the memory address 0x12c9003ee (4.7GB) gives me exactly 4GB of memory available to Windows, and reserves exactly 2GB in the resource monitor under "Hardware Reserved". If I reserve any less the graphics card doesn't work well, and the whole system sputters and lags.
I assume this has something to do with poor memory mapping, because the graphics card works flawlessly but I'm not able to use those last 2GB of RAM.
Is there anything I can do given my BIOS does not support memory remapping? The motherboard can support upto 24GB or RAM.