Vista - vista don't recongize 4 gigs of system memory

Vista does not see the extra gig of memory, i have 4 1 gig ddr400 memory
installed and the motherboard sees it but vista don't.
--
geo

geo85706 wrote:
> Vista does not see the extra gig of memory, i have 4 1 gig ddr400 memory
> installed and the motherboard sees it but vista don't.

You have to correct that in your BIOS. How to
do it will be in your owner's manual. Vista
sees all the RAM the BIOS lets it see.

"John Boy" <John.Boy@Discussions.Microsoft.Com> wrote in message
news:OGZj5Z3oGHA.4364@TK2MSFTNGP03.phx.gbl...
> geo85706 wrote:
>> Vista does not see the extra gig of memory, i have 4 1 gig ddr400 memory
>> installed and the motherboard sees it but vista don't.
>
> You have to correct that in your BIOS. How to do it will be in your
> owner's manual. Vista sees all the RAM the BIOS lets it see.
>

He said his BIOS DOES see it

The BIOS will certainly see it but will usually keep some for its own
purposes and not report it as available to Windows unless you find and
change some settings which are often not available unless you have a
motherboard aimed at overclockers.

If available, change MTRR from its default of Continuous to Discrete.
The Memory Hole setting can also affect the memory reported to Windows.


"Tom Scales" <tjscales@gmail.com> wrote in message
news:OQI8k64oGHA.4912@TK2MSFTNGP05.phx.gbl...
>
> "John Boy" <John.Boy@Discussions.Microsoft.Com> wrote in message
> news:OGZj5Z3oGHA.4364@TK2MSFTNGP03.phx.gbl...
>> geo85706 wrote:
>>> Vista does not see the extra gig of memory, i have 4 1 gig ddr400 memory
>>> installed and the motherboard sees it but vista don't.
>>
>> You have to correct that in your BIOS. How to do it will be in your
>> owner's manual. Vista sees all the RAM the BIOS lets it see.
>>
>
> He said his BIOS DOES see it
>

Tom Scales wrote:
> "John Boy" <John.Boy@Discussions.Microsoft.Com> wrote in message
> news:OGZj5Z3oGHA.4364@TK2MSFTNGP03.phx.gbl...
>> geo85706 wrote:
>>> Vista does not see the extra gig of memory, i have 4 1 gig ddr400 memory
>>> installed and the motherboard sees it but vista don't.
>> You have to correct that in your BIOS. How to do it will be in your
>> owner's manual. Vista sees all the RAM the BIOS lets it see.
>>
>
> He said his BIOS DOES see it
>
>

On my Asus board in the BIOS there is "DRAM Over
4G Remapping" that must be enabled for the OS to
see most of the 4G. Even with it enable I still
lose a little bit and don't see the full 4G.
There is a memory "hole" by design. Enabling
the 4G Remapping moves it around the "hole" so
the OS can see it.

Hello,
I was just about to post a question on the forum is see if 32-bit vista had
overcome this missing memory problem when I spotted this post.
I have 4G memory and running xp pro , only 3G was available. Using xp pro
64-bit I could see the full 4G of memory. It turns out that XP and ( VISTA
32-bit as well?) both use address's out of the 4G memory range to address
hardware devices. Each hardware device you have means less addressable RAM.
So I guess the answer is yes, VISTA has the same problem.... looks like I am
going to stay with 64-bit then.


"John Boy" wrote:

> Tom Scales wrote:
> > "John Boy" <John.Boy@Discussions.Microsoft.Com> wrote in message
> > news:OGZj5Z3oGHA.4364@TK2MSFTNGP03.phx.gbl...
> >> geo85706 wrote:
> >>> Vista does not see the extra gig of memory, i have 4 1 gig ddr400 memory
> >>> installed and the motherboard sees it but vista don't.
> >> You have to correct that in your BIOS. How to do it will be in your
> >> owner's manual. Vista sees all the RAM the BIOS lets it see.
> >>
> >
> > He said his BIOS DOES see it
> >
> >
>
> On my Asus board in the BIOS there is "DRAM Over
> 4G Remapping" that must be enabled for the OS to
> see most of the 4G. Even with it enable I still
> lose a little bit and don't see the full 4G.
> There is a memory "hole" by design. Enabling
> the 4G Remapping moves it around the "hole" so
> the OS can see it.
>

"Dominic Payer" <dominic@dc_p_ayer.freeserve.co.uk> wrote in message
news:%23oFQ%23U5oGHA.1592@TK2MSFTNGP04.phx.gbl...
> The BIOS will certainly see it but will usually keep some for its own
> purposes and not report it as available to Windows unless you find and
> change some settings which are often not available unless you have a
> motherboard aimed at overclockers.
>
> If available, change MTRR from its default of Continuous to Discrete.
> The Memory Hole setting can also affect the memory reported to Windows.
>
>
> "Tom Scales" <tjscales@gmail.com> wrote in message
> news:OQI8k64oGHA.4912@TK2MSFTNGP05.phx.gbl...
>>
>> "John Boy" <John.Boy@Discussions.Microsoft.Com> wrote in message
>> news:OGZj5Z3oGHA.4364@TK2MSFTNGP03.phx.gbl...
>>> geo85706 wrote:
>>>> Vista does not see the extra gig of memory, i have 4 1 gig ddr400
>>>> memory installed and the motherboard sees it but vista don't.

From my understanding if you install 4 GIG of RAM it has to be below PC3200.
I have an Asus K8V SLI NForce Deluxe and according to the manual if I can
only install 2gig of DDR400, but anything below can be installed up 4gig
which is the max. Consult you manual or Asus website on memory
configuration.
>>>
>>> You have to correct that in your BIOS. How to do it will be in your
>>> owner's manual. Vista sees all the RAM the BIOS lets it see.
>>>
>>
>> He said his BIOS DOES see it
>>
>
>

> From my understanding if you install 4 GIG of RAM it has to be below
> PC3200.
> I have an Asus K8V SLI NForce Deluxe and according to the manual if I can
> only install 2gig of DDR400, but anything below can be installed up 4gig
> which is the max. Consult you manual or Asus website on memory
> configuration

That must be an ASUS limit. I am running an MSI k8n-sliF with 4GB of DDR 400
with no problems. I did have to enable the Discrete MTRR option and the H/W
remapping of memory.
I am runnign x64 with no issues.........my x86 OS crashes when I try to use
Media Center to watch Live TV though...not sure if it is related to the
memory remapping(since the bios mentions this is only for 64 bit OS')

Hi

I am have the same problem missing 1 Gb of memory

When I was running vista beta 2 32bit O/S, I could see all 4GB of memory,
upgrade to RC1 Build 5600 I am now only seeing 3GB of memory.

If I switch to vista RC1 64bit, I can see 4GB RAM on my system.

No problem with my Bios, all set as suggested the problems is in this new
build of vista RC1

I still trying to find how can I address/access this missing 1GB when using
32bit O/S?


Thanks

Simon

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"Mick" wrote:

> Hello,
> I was just about to post a question on the forum is see if 32-bit vista had
> overcome this missing memory problem when I spotted this post.
> I have 4G memory and running xp pro , only 3G was available. Using xp pro
> 64-bit I could see the full 4G of memory. It turns out that XP and ( VISTA
> 32-bit as well?) both use address's out of the 4G memory range to address
> hardware devices. Each hardware device you have means less addressable RAM.
> So I guess the answer is yes, VISTA has the same problem.... looks like I am
> going to stay with 64-bit then.
>
>
> "John Boy" wrote:
>
> > Tom Scales wrote:
> > > "John Boy" <John.Boy@Discussions.Microsoft.Com> wrote in message
> > > news:OGZj5Z3oGHA.4364@TK2MSFTNGP03.phx.gbl...
> > >> geo85706 wrote:
> > >>> Vista does not see the extra gig of memory, i have 4 1 gig ddr400 memory
> > >>> installed and the motherboard sees it but vista don't.
> > >> You have to correct that in your BIOS. How to do it will be in your
> > >> owner's manual. Vista sees all the RAM the BIOS lets it see.
> > >>
> > >
> > > He said his BIOS DOES see it
> > >
> > >
> >
> > On my Asus board in the BIOS there is "DRAM Over
> > 4G Remapping" that must be enabled for the OS to
> > see most of the 4G. Even with it enable I still
> > lose a little bit and don't see the full 4G.
> > There is a memory "hole" by design. Enabling
> > the 4G Remapping moves it around the "hole" so
> > the OS can see it.
> >

Same deal here. My BIOS and Linux both see all 4GB of RAM, but Vista (x86)
only sees 3GB of it. I'm also experiencing lots of BSODs with "MEMORY
MANAGEMENT" errors. If I remove 2GB, everything works just fine...

"geo85706" wrote:

> Vista does not see the extra gig of memory, i have 4 1 gig ddr400 memory
> installed and the motherboard sees it but vista don't.
> --
> geo