Windows 7 Ultimate 64-bit doesn't support 4GB RAM?

[Ex_Brit]

having the same problem as you guys. cannot install more than 2gb ram. just updated the bios and nothings changed. If i leave it to boot with 4gb then it hangs on the windows logo and after a while just turns itself off.

asus pn532 sli-se-deluxe, 2.4ghz dual core, corsair ram, 64 bit pro.

Are you sure about that board number? The 5N32 is 32-bit so will not recognize more than about 3.3gb anyway.

EDIT: I stand corrected....it will take up to 8gb RAM according to ASUS but the RAM sticks must be of specific makes/types.

 

[sup3rsprt]

Are you sure about that board number? The 5N32 is 32-bit so will not recognize more than about 3.3gb anyway.

The number 32 relates to the amount of PCI-Express lanes.

 

[Ex_Brit]

Yes, I did go back and edit my post, sorry about that. I've been combing the internet on this subject and so far have come up with lots of theories but no firm solution for you guys.

 

[joel406]

I have 6gigs of RAM and Win7 installed flawlessly.

You must have cheap hardware.

 

[sup3rsprt]

You must have cheap hardware.

It's not really fair to say. Because his system might run other operating systems flawlessly. This is an issue specific to Windows 7.

 

[jltk87]

was previousely using vista 64 which ran fine.

Ran windows 7 32bit fine as well with 4gigs. just 64 bit that has this problem.

I dont seem to have or cant find a max memmory setting in my bios.

 

[bobkn]

was previousely using vista 64 which ran fine.

Ran windows 7 32bit fine as well with 4gigs. just 64 bit that has this problem.

I dont seem to have or cant find a max memmory setting in my bios.

I suggest running a memory diagnostic like MemTest86+:

Memtest86+ - Advanced Memory Diagnostic Tool

It's OS independent. I don't know whether the 64 bit version of Win7 has more trouble booting with glitchy RAM than the 32 bit version.

I'm running Home Premium X64 with 12GB of RAM. (The maximum it supports is 16GB; it goes to 192GB with Pro.)

 

[liptochron]

I'm having the same issue Simon, it's not your hardware. Well, it is your hardware, but specifically, it's the fact that W7 can't support your hardware yet. It seems to be an issue with owners of certain Asus mobos with Athlon processors.
I am running:
Asus M2V-MX mobo
Athlon X2 6000+
2x2048MB Kingston RAM

Before W7 I was running XP Pro-64 with no problems. Then when I tried to run a clean install of W7 everything froze until I took out 2GB of ram.
It's been mentioned in several forums. This thread seems to have a BIOS tweak that may help some people, but it's not an option on mine.
Anyone have issue with installing windows 7 x64 with 4GB ram

Unfortunately, that stick of RAM might have to sit in your drawer until Microsoft comes up with a patch.

 

[simonsiknasty]

Does this issue just occur on the Ultimate version of Windows 7?

 

[jychan28]

Bottom line, it is not Windows 7 Ultimate problem.
That is so obvious that it could not possible that Microsoft let that bug out.

I would think the problem most likely is the board or bios. Make sure the setting on the board is correct and the bios is up to date.

I installed Windows 7 x64 Ultimate version on a Asus motherboard. Later I replaced the Core 2 CPU with the Quad and got into trouble, machine won't boot. I put back the old CPU, got to the web downloaded the latest Bios and believe or not I had to use a floppy drive to update the bios. Once updated, put in the Quad, problem solved.

The CD supposed contain both 32bit and 64bit version. Put back 4G RAM, install the 32bit version. It will use 3G RAM. If you have installation with that too, you know your problem is your motherboard, Bios or possible you damaged your RAM or did not seat the RAM in the socket properly (Swap the RAM and see if you have damage the RAM strips).

 

[liptochron]

I realize hardware is an issue here because it's not happening to everyone, but why then does XP64 run perfectly with the same hardware? That leads me to believe that there is a software issue as well. As I've read, there seemed to be a similar problem with Vista that was patched later.

EDIT: And yes, I am also installing W7 Ultimate.

 

[sup3rsprt]

why then does XP64 run perfectly with the same hardware?

Windows 7 apparently has issues with some hardware configurations and/or BIOS settings. It is either going to take updates from Microsoft or updates from the manufacturers to fix this problem.

Yes Vista had similar issues before, and updates were released to address some of the problems very similar to this one.

 

[Ex_Brit]

I just received 6 email notifications at once for this reply...server glitch?

 

[simonsiknasty]

I think it's emails that came late. At one point I had 4 come in at once.

 

[Ex_Brit]

Seems to have stopped whatever it was.

 

[mcleod55]

I have 4 gb in mine and it installed without any issues.

 

[chev65]

Seems to me that using the bios voltage adjustments will fix these types of problems. Those voltage adjustments are there for a reason and this is one of the reasons they are there.

Windows 7 is famous for requiring more North Bridge "memory controller" voltage than XP or Vista in order to run stable. This fact has already been confirmed on numerous occasions. Making sure that the memory voltage is up to manufacture specs will also help.

Learn how to adjust these types of settings people, they can make a huge difference in overall stablity.

 

[mcleod55]

A BIOS update may be cure all for this problem.

 

[liptochron]

Seems to me that using the bios voltage adjustments will fix these types of problems. Those voltage adjustments are there for a reason and this is one of the reasons they are there.

Windows 7 is famous for requiring more North Bridge "memory controller" voltage than XP or Vista in order to run stable. This fact has already been confirmed on numerous occasions. Making sure that the memory voltage is up to manufacture specs will also help.

Learn how to adjust these types of settings people, they can make a huge difference in overall stablity.

Now you're getting over my head. Where can I find a good tutorial? I don't want to go burning my board up.

 

[martytoo]

I'm running 64 Bit Enterprise which is almost identical to Ultimate my sysinfo clearly shows 4GB RAM no problem here at all. (I'm not in the U.S. though!)

OS Name Microsoft Windows 7 Enterprise
Version 6.1.7600 Build 7600
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Name MARTIN-PC
System Manufacturer Gigabyte Technology Co., Ltd.
System Model GA-MA790XT-UD4P
System Type x64-based PC
Processor AMD Phenom(tm) II X2 550 Processor, 3100 Mhz, 2 Core(s), 2 Logical Processor(s)
BIOS Version/Date Award Software International, Inc. F4, 21/05/2009
SMBIOS Version 2.4
Windows Directory C:\Windows
System Directory C:\Windows\system32
Boot Device \Device\HarddiskVolume2
Locale United States
Hardware Abstraction Layer Version = "6.1.7600.16385"
User Name Martin-PC\Martin
Time Zone GMT Standard Time
Installed Physical Memory (RAM) 4.00 GB
Total Physical Memory 4.00 GB
Available Physical Memory 2.98 GB
Total Virtual Memory 8.00 GB
Available Virtual Memory 6.33 GB
Page File Space 4.00 GB
Page File C:\pagefile.sys