Windows XP Professional x64 Only Seeing 3GB RAM?
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From: Dan on 14 Dec 2007 07:42 Windows XP Professional x64 and 4GB RAM? Alright, So with all the development and what not that I do, I decided to upgrade my system to 4GB of RAM. Also, due to software incompatibilities with Vista, I decided the my only real choice was Windows XP Professional x64 for my OS. I ran through the entire install, got all my drivers, everything seemed to be going well. I got my RAM today in the mail, slapped it in, checked the BIOS, and everything looked good. However, once I got into Windows, it only shows that I have 3GB available: http://i60.photobucket.com/albums/h33/danodemano/Spec.jpg I checked with CPUZ to make sure that it was seeing the full 4GB and it was: http://i60.photobucket.com/albums/h33/danodemano/CPUZ_RAM.jpg Now correct me if I'm wrong, but I had always thought that XP 64-bit supported something like 128GB of RAM....so why is my system not seeing the full 4GB???? Is there some option that I have to enable to allow Windows to use the full 4GB??? Any help would be appreciated, thanks!!
From: Dominic Payer on 14 Dec 2007 08:40 There are two BIOS settings which may need to be made. Memory Hole is one, and may have both hardware and software versions. There is also MTRR, which is often not available. You may need to update your motherboard BIOS to have these settings available. The best place for advice on the settings is your motherboard manufacturer's forums. "Dan" <Danodemano(a)gmail.com> wrote in message news:0598f59e-274f-429f-9d2f-bd84d16da7dc(a)b40g2000prf.googlegroups.com... > Windows XP Professional x64 and 4GB RAM? > Alright, So with all the development and what not that I do, I decided > to upgrade my system to 4GB of RAM. Also, due to software > incompatibilities with Vista, I decided the my only real choice was > Windows XP Professional x64 for my OS. I ran through the entire > install, got all my drivers, everything seemed to be going well. I got > my RAM today in the mail, slapped it in, checked the BIOS, and > everything looked good. However, once I got into Windows, it only > shows that I have 3GB available: > http://i60.photobucket.com/albums/h33/danodemano/Spec.jpg > > I checked with CPUZ to make sure that it was seeing the full 4GB and > it was: http://i60.photobucket.com/albums/h33/danodemano/CPUZ_RAM.jpg > > Now correct me if I'm wrong, but I had always thought that XP 64-bit > supported something like 128GB of RAM....so why is my system not > seeing the full 4GB???? Is there some option that I have to enable to > allow Windows to use the full 4GB??? > > Any help would be appreciated, thanks!!
From: PC ME on 14 Dec 2007 09:20 -- I dig working on electrical stuff! "Dan" wrote: > Windows XP Professional x64 and 4GB RAM? > Alright, So with all the development and what not that I do, I decided > to upgrade my system to 4GB of RAM. Also, due to software > incompatibilities with Vista, I decided the my only real choice was > Windows XP Professional x64 for my OS. I ran through the entire > install, got all my drivers, everything seemed to be going well. I got > my RAM today in the mail, slapped it in, checked the BIOS, and > everything looked good. However, once I got into Windows, it only > shows that I have 3GB available: http://i60.photobucket.com/albums/h33/danodemano/Spec.jpg > > I checked with CPUZ to make sure that it was seeing the full 4GB and > it was: http://i60.photobucket.com/albums/h33/danodemano/CPUZ_RAM.jpg > > Now correct me if I'm wrong, but I had always thought that XP 64-bit > supported something like 128GB of RAM....so why is my system not > seeing the full 4GB???? Is there some option that I have to enable to > allow Windows to use the full 4GB??? > > Any help would be appreciated, thanks!! >
From: miso on 14 Dec 2007 16:35 On Dec 14, 4:42 am, Dan <Danodem...(a)gmail.com> wrote: > Windows XP Professional x64 and 4GB RAM? > Alright, So with all the development and what not that I do, I decided > to upgrade my system to 4GB of RAM. Also, due to software > incompatibilities with Vista, I decided the my only real choice was > Windows XP Professional x64 for my OS. I ran through the entire > install, got all my drivers, everything seemed to be going well. I got > my RAM today in the mail, slapped it in, checked the BIOS, and > everything looked good. However, once I got into Windows, it only > shows that I have 3GB available:http://i60.photobucket.com/albums/h33/danodemano/Spec.jpg > > I checked with CPUZ to make sure that it was seeing the full 4GB and > it was:http://i60.photobucket.com/albums/h33/danodemano/CPUZ_RAM.jpg > > Now correct me if I'm wrong, but I had always thought that XP 64-bit > supported something like 128GB of RAM....so why is my system not > seeing the full 4GB???? Is there some option that I have to enable to > allow Windows to use the full 4GB??? > > Any help would be appreciated, thanks!! On my mobo, you need to get into the bios, enter control+F1, which adds more features to tweak. Then find "memory remap."
From: Dan on 14 Dec 2007 17:16
On Dec 14, 4:35 pm, m...(a)sushi.com wrote: > On Dec 14, 4:42 am, Dan <Danodem...(a)gmail.com> wrote: > > > > > Windows XP Professional x64 and 4GB RAM? > > Alright, So with all the development and what not that I do, I decided > > to upgrade my system to 4GB of RAM. Also, due to software > > incompatibilities with Vista, I decided the my only real choice was > > Windows XP Professional x64 for my OS. I ran through the entire > > install, got all my drivers, everything seemed to be going well. I got > > my RAM today in the mail, slapped it in, checked the BIOS, and > > everything looked good. However, once I got into Windows, it only > > shows that I have 3GB available:http://i60.photobucket.com/albums/h33/danodemano/Spec.jpg > > > I checked with CPUZ to make sure that it was seeing the full 4GB and > > it was:http://i60.photobucket.com/albums/h33/danodemano/CPUZ_RAM.jpg > > > Now correct me if I'm wrong, but I had always thought that XP 64-bit > > supported something like 128GB of RAM....so why is my system not > > seeing the full 4GB???? Is there some option that I have to enable to > > allow Windows to use the full 4GB??? > > > Any help would be appreciated, thanks!! > > On my mobo, you need to get into the bios, enter control+F1, which > adds more features to tweak. Then find "memory remap." Interesting....I will try that and let you know how it turns out. I have an HP laptop though so I don't know how much I can do with the BIOS. This is my motherboard info if that helps: http://i60.photobucket.com/albums/h33/danodemano/Motherboard.jpg |