only 3.24Gb of 8Gb installed RAM used and other RAM issues

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vector72

Honorable
Dec 12, 2012
20
0
10,510
okay first of all before people ask this is my RIG:
Foxconn H55MXV
Intel i3 530 @ 2.83GHz
Radeon HD 5770
was 2x2Gb of RAM now trying to move to 2x4Gb

First off just want to say I’ve never swapped out RAM before so this is all kind of new to me.

I installed the new RAM, booted up the PC, everything was fine except when I checked the system information it said 'installed memory (RAM); 8.00Gb (3.24Gb usable)'
(pictures below)
I have so far tried going into the BIOS and enabling the 'Memory Remap Feature' which caused my PC to freeze/ get stuck on the splash screen for the motherboard the big Foxconn logo would appear, and then nothing else would happen. I then spent the next half an hour taking my PC apart to get to the CMOS jumper in order to reset it, putting everything back to normal.

I have since tried enabling 'maximum memory' in the boot options and updating my BIOS. Neither of which have done anything.

I have not yet tried re-enabling the memory remap since making these changed as my CMOS thing is a pain to get to and I'd rather not attempt anything before i know what could have gone wrong the first time I enabled it.

is it literally just that i needed to enable maximum boot memory? or could it be something else?



Sorry long post is long.



 
Solution
Hi,

The H55MXV motherboard from Foxconn has two legacy PCI slots on it. Motherboards that have PCI slots often have a firmware setting to enable/disable memory-hole-remapping. The reason for this is that while the x86 physical address space has exceeded 32 bits since 1995 (although it remains clamped to 32 bits in 32-bit consumer versions of Windows), the PCI bus has a native address space of only 32 bits which without proper support constricts the PCI device view of the system. This presents a compatibility issue for some devices and operating systems, disabling memory-hole-remapping clamps the size of the physical address space to 32 bits.

I have confirmed with your motherboard manual that this feature is present and by default...
Okay well, i've now tried updating the BIOS and re-installing windows and still nothing. at this point i'm either just going to just use my old RAM and live with it till i get a new PC, or take it down to a local PC shop and see what they make of it, cause i have no idea why it's not working.