Win XP x64 not recognizing all 8 gigs of ram

[Guest Aaron]

Hi,

 

I currently have 4 gigs of ram on my s5000xvn motherboard. Everything has

been running fine for more than a year. I just purchased 4 more gigs of ram.

So I have four 2gig sticks. Sloted A1, B1, C1 and D1.

 

When I put the new ram in the C1 and D1 slots the computer asks me to boot

into safe mode. But it will not boot in safe mode. So, I verified the ram

works by replaceing my existing ram with the new ram in the A1 and B1 slots.

And it works.

When I have all four sticks in the Bios recognizes 8 gigs of ram on the board.

 

Supertalent suggests it is an operating system issue.

 

So how can I get windows xp x64 to see all of my ram. The said I may need

to fix the MBR????

 

How do I do this, if this is what I need to do??

 

Thanks,

 

Aaron

[Guest Colin Barnhorst]

Re: Win XP x64 not recognizing all 8 gigs of ram

 

If you check the mobo manufacturer's website you may find that your mobo

will only see 7GB with 8GB installed. There are mobos out there with that

limitation. You can only determine for sure by checking with the

manufacturer.

 

It may also be a quirk of the dram timings.

 

It is unlikely to be an OS problem.

 

"Aaron" <Aaron@discussions.microsoft.com> wrote in message

news:51D5EA15-870F-4661-A53C-A4ADD868B0A2@microsoft.com...

> Hi,

>

> I currently have 4 gigs of ram on my s5000xvn motherboard. Everything has

> been running fine for more than a year. I just purchased 4 more gigs of

> ram.

> So I have four 2gig sticks. Sloted A1, B1, C1 and D1.

>

> When I put the new ram in the C1 and D1 slots the computer asks me to boot

> into safe mode. But it will not boot in safe mode. So, I verified the

> ram

> works by replaceing my existing ram with the new ram in the A1 and B1

> slots.

> And it works.

> When I have all four sticks in the Bios recognizes 8 gigs of ram on the

> board.

>

> Supertalent suggests it is an operating system issue.

>

> So how can I get windows xp x64 to see all of my ram. The said I may need

> to fix the MBR????

>

> How do I do this, if this is what I need to do??

>

> Thanks,

>

> Aaron

>

[Guest Aaron]

Re: Win XP x64 not recognizing all 8 gigs of ram

 

The things is my board supports up to 32 gigs of ram. I called intel. I

have an Intel board. They told me since the bios recognizes the 8 gigs but

the system will not boot it must be an operating system error. The suggested

putting all the ram in and running an repair/ install to see if OS would see

it that way.

 

Thanks,

 

"Colin Barnhorst" wrote:

> If you check the mobo manufacturer's website you may find that your mobo

> will only see 7GB with 8GB installed. There are mobos out there with that

> limitation. You can only determine for sure by checking with the

> manufacturer.

>

> It may also be a quirk of the dram timings.

>

> It is unlikely to be an OS problem.

>

> "Aaron" <Aaron@discussions.microsoft.com> wrote in message

> news:51D5EA15-870F-4661-A53C-A4ADD868B0A2@microsoft.com...

> > Hi,

> >

> > I currently have 4 gigs of ram on my s5000xvn motherboard. Everything has

> > been running fine for more than a year. I just purchased 4 more gigs of

> > ram.

> > So I have four 2gig sticks. Sloted A1, B1, C1 and D1.

> >

> > When I put the new ram in the C1 and D1 slots the computer asks me to boot

> > into safe mode. But it will not boot in safe mode. So, I verified the

> > ram

> > works by replaceing my existing ram with the new ram in the A1 and B1

> > slots.

> > And it works.

> > When I have all four sticks in the Bios recognizes 8 gigs of ram on the

> > board.

> >

> > Supertalent suggests it is an operating system issue.

> >

> > So how can I get windows xp x64 to see all of my ram. The said I may need

> > to fix the MBR????

> >

> > How do I do this, if this is what I need to do??

> >

> > Thanks,

> >

> > Aaron

> >

>

[Guest Tony Sperling]

Re: Win XP x64 not recognizing all 8 gigs of ram

 

I have no experience from that much memory, what I would do when it fails to

boot, is to re-boot several times without making any changes to the setup -

just checking that the BIOS can verify the amount (which you did!). I have

seen occasions where changes makes the system insecure wether or not there

is a conflict with the registry settings and fails to report it - or ask you

about it. Giving it another chance may trigger it to accept that changes

really has been made.

 

Rather than being an actual error, I believe this is a side-effect of one of

the OS features that usually works extremely well: the recovery system.

 

You have the option to boot from the "Last known GOOD configuration" - I

think this feature (even if you didn't touch it) could possibly be

responsible, in a way that it creates a 'Uncertainty Principle' of it's own

on some boards and in some situations when it decides it would rather boot

up as usual and not bother you about such trivia.

 

If a couple of re-bootings doesn't work for you, I think a 'Repair Install'

is an excellent advice. It is simple and unintrusive except for the fact

that you'll need to have Windows Update install everything again. This could

take a couple of days, before it has everything in place. Also, you'll need

to have any SATA and/or RAID (SCSI?) drivers ready for the F6 routine, that

your setup may require.

 

I cannot think of any way that a MBR repair would benefit anything in your

situation! ( that is - if it wouldn't actually help the system put more

trust to the hardware scanner than it did to the registry? )

 

??? - Hmm. . .No, I think not.

 

 

Tony. . .

 

 

"Aaron" <Aaron@discussions.microsoft.com> wrote in message

news:04BD51CB-E549-4221-8B6B-74A4F477A2DC@microsoft.com...

> The things is my board supports up to 32 gigs of ram. I called intel. I

> have an Intel board. They told me since the bios recognizes the 8 gigs

> but

> the system will not boot it must be an operating system error. The

> suggested

> putting all the ram in and running an repair/ install to see if OS would

> see

> it that way.

>

> Thanks,

>

[Guest Rune Moberg]

Re: Win XP x64 not recognizing all 8 gigs of ram

 

"Aaron" <Aaron@discussions.microsoft.com> wrote in message

news:04BD51CB-E549-4221-8B6B-74A4F477A2DC@microsoft.com...

> have an Intel board. They told me since the bios recognizes the 8 gigs

> but

> the system will not boot it must be an operating system error. The

> suggested

 

Any "memory hole" options you can set in the BIOS setup?

 

--

Rune

[Guest Hatter]

Re: Win XP x64 not recognizing all 8 gigs of ram

 

I may be totally off base, but with more RAM the page file is going to want

to increase in size also to be 150%. What if you disable the pagefile first,

install the add'l 4GB and then boot in Safe Mode?

 

Sometimes two batches of memory, even from someone like Micron, just don't

get along due to variations.

 

 

"Aaron" <Aaron@discussions.microsoft.com> wrote in message

news:04BD51CB-E549-4221-8B6B-74A4F477A2DC@microsoft.com...

> The things is my board supports up to 32 gigs of ram. I called intel. I

> have an Intel board. They told me since the bios recognizes the 8 gigs

> but

> the system will not boot it must be an operating system error. The

> suggested

> putting all the ram in and running an repair/ install to see if OS would

> see

> it that way.

>

> Thanks,

>

> "Colin Barnhorst" wrote:

>

>> If you check the mobo manufacturer's website you may find that your mobo

>> will only see 7GB with 8GB installed. There are mobos out there with

>> that

>> limitation. You can only determine for sure by checking with the

>> manufacturer.

>>

>> It may also be a quirk of the dram timings.

>>

>> It is unlikely to be an OS problem.

>>

>> "Aaron" <Aaron@discussions.microsoft.com> wrote in message

>> news:51D5EA15-870F-4661-A53C-A4ADD868B0A2@microsoft.com...

>> > Hi,

>> >

>> > I currently have 4 gigs of ram on my s5000xvn motherboard. Everything

>> > has

>> > been running fine for more than a year. I just purchased 4 more gigs

>> > of

>> > ram.

>> > So I have four 2gig sticks. Sloted A1, B1, C1 and D1.

>> >

>> > When I put the new ram in the C1 and D1 slots the computer asks me to

>> > boot

>> > into safe mode. But it will not boot in safe mode. So, I verified the

>> > ram

>> > works by replaceing my existing ram with the new ram in the A1 and B1

>> > slots.

>> > And it works.

>> > When I have all four sticks in the Bios recognizes 8 gigs of ram on the

>> > board.

>> >

>> > Supertalent suggests it is an operating system issue.

>> >

>> > So how can I get windows xp x64 to see all of my ram. The said I may

>> > need

>> > to fix the MBR????

>> >

>> > How do I do this, if this is what I need to do??

>> >

>> > Thanks,

>> >

>> > Aaron

>> >

>>

[Guest Rune Moberg]

Re: Win XP x64 not recognizing all 8 gigs of ram

 

"Hatter" <hatter@msnews.microsoft.com> wrote in message

news:36872818-F8FD-4A89-A2C8-223B5A193551@microsoft.com...

>I may be totally off base, but with more RAM the page file is going to want

>to increase in size also to be 150%. What if you disable the pagefile

>first,

 

Setting the pagefile size to 1.5x the installed memory is the recommended

size (it used to be installed memory + 11MB). It isn't a requirement and

doesn't have any bearing on the problem at hand.

 

Memory hole options in the BIOS OTOH has a real and quite noticable

impact... (contact the motherboard OEM in case those options are missing)

 

--

Rune

[Guest Rune Moberg]

Re: Win XP x64 not recognizing all 8 gigs of ram

 

"Aaron" <Aaron@discussions.microsoft.com> wrote in message

news:04BD51CB-E549-4221-8B6B-74A4F477A2DC@microsoft.com...

> The things is my board supports up to 32 gigs of ram. I called intel. I

> have an Intel board. They told me since the bios recognizes the 8 gigs

> but

> the system will not boot it must be an operating system error. The

> suggested

 

Sorry, didn't quite catch what you were trying to say the first time I read

your message...

 

The system refuses to boot? Any error messages...? (please -- always post

any and all error messages, don't start a guessing game!)

 

My guess? A surprisingly high number of drivers have problems dealing with

64-bit memory addresses. They do unsound stuff with pointers, and some OEMs

simply recompile their 32-bit drivers hoping nobody will poke their drivers

too hard. In that case you should be awarded with a big fat juicy BSOD, and

the generated memory dump should hold some clues as to who the culprit is.

 

--

Rune