Tom's Hardware > Forum > Motherboards & Memory > Memory > Windows XP X64 RAM Problem only detects 3 GB

Windows XP X64 RAM Problem only detects 3 GB

Forum Motherboards & Memory : Memory - Windows XP X64 RAM Problem only detects 3 GB

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junktamil   01-23-2009 at 01:11:43 AM

Hi,

I have a Toshiba Laptop, I upgraded to 4 GB of ram it used to show me 4 GB before but now the windows XP only detects 3 GB. The below are my configurations


Core 2 Duo Processor T5550 Processor
Intel Mobile 965 GM chipset
(2 x 2 GB) PC5300 RAM
Windows XP x64 Professional (64 bit Edition with service Pack 2)


My Bios detects 4 GB of RAM, I also dual boot Vista Home Premium 32 bit which also detects 4 GB of RAM. I am not able to figure what the problem is. Cpu Z also detects 4 GB in Windows XP x64.


Help would be great. Thank You.

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Tacoboy   01-23-2009 at 07:45:03 AM
- 0 +

Windows XP 32-bit will usually not recognize more then 3.0GB to 3.25GB of memory.
So I'm guessing Vista 32-bit is the same.

Are you sure you are using Windows XP x64 (64-bit) and not Windows XP 32-bit?

Reply to Tacoboy
junktamil   01-27-2009 at 11:21:18 PM
- 0 +

I am 100% Sure, I am using Windows XP x64 (64-bit)

I am not sure if I can post a picture of a link, if I can I will post them here.

Reply to junktamil
moondoggie   03-12-2009 at 10:46:35 PM
- 0 +

i have the same problem...
i found that disabling /maxmem=4096 in boot.ini shows all 4gb, but disables my hibernate option

Reply to moondoggie
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