4 Gig Memory Not recognised even on XP 64 bit OS

K-Hunter · 12-26-2008, 04:09 PM

Dear Group,

I have had this problem for a while and I have not been able to find a decisive answer as yet. I built my own system. The main components being as follows:

Windows XP 64 bit Professional OS
DFI P35 Lanparty Motherboard
Intel Core 2 Quad 6600 processor
Nvidia 8800 series graphics card
x4 1 Gig Corsair ram (4 gig in total)

However, in System information Windows says I only have 3.25 Gig memory. Why? So many people in the forums I have seen put it down to the OS. But I am using a 64 bit OS. Is there one of the components as listed above that is somehow responsible? Or is there some setting either in Windows or BIOS that I need to change so that 4.0 Gig is recognised. I am wanting to increase my memory to 8 Gig, which is the maximum my motherboard will support. But there is absolutely no point if it will not be recognised.

Any help would be appreciated.

Keith

**magnethead** · 12-26-2008, 04:58 PM

I was told once there might be a switch somewhere in the OS for problems like that, typically used for backward compatiability or something. But no for sure answer, or where it would be.

12-26-2008, 04:09 PM	#1 (permalink)
K-Hunter Registered User Join Date: Dec 2008 Posts: 1 OS: Windows XP 64 bit Professional	4 Gig Memory Not recognised even on XP 64 bit OS Dear Group, I have had this problem for a while and I have not been able to find a decisive answer as yet. I built my own system. The main components being as follows: Windows XP 64 bit Professional OS DFI P35 Lanparty Motherboard Intel Core 2 Quad 6600 processor Nvidia 8800 series graphics card x4 1 Gig Corsair ram (4 gig in total) However, in System information Windows says I only have 3.25 Gig memory. Why? So many people in the forums I have seen put it down to the OS. But I am using a 64 bit OS. Is there one of the components as listed above that is somehow responsible? Or is there some setting either in Windows or BIOS that I need to change so that 4.0 Gig is recognised. I am wanting to increase my memory to 8 Gig, which is the maximum my motherboard will support. But there is absolutely no point if it will not be recognised. Any help would be appreciated. Keith

12-26-2008, 04:58 PM	#2 (permalink)
magnethead Registered User Join Date: Mar 2006 Location: Texas, USA Posts: 3,570 OS: Vista ultimate 32bit My System Blog Entries: 3	Re: 4 Gig Memory Not recognised even on XP 64 bit OS I was told once there might be a switch somewhere in the OS for problems like that, typically used for backward compatiability or something. But no for sure answer, or where it would be. __________________ For proper support: what are you running? graphics, cpu, m/board, ram, PSU brand wattage PCI-E requires 26 amps at 12 volts. That's a 650W PSU. Power Supply Info and Selection . Info on thermal compounds & application . TEST PSU USING MULTI-METER . Bench Testing Your System