System recognizes 4GB of RAM installed, but total physical memory is only 2GB. I'm aware that I should only see around 3.3 GB when it is all up and running, but 2GB?
What do I need to do to fix this? I have BIOS A07.


Note- I have tried installing each module into each slot- both modules are good, both slots are good.
BIOS recognized 4096 MB of installed RAM, with 33xx available for system use.








OS Name Microsoft® Windows Vista™ Business
Version 6.0.6001 Service Pack 1 Build 6001
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Name DD31T2D1
System Manufacturer Dell Inc.
System Model Latitude D820
System Type X86-based PC
Processor Intel(R) Core(TM)2 CPU T7600 @ 2.33GHz, 2333 Mhz, 2 Core(s), 2 Logical Processor(s)
BIOS Version/Date Dell Inc. A07, 6/15/2007
SMBIOS Version 2.4
Windows Directory C:\Windows
System Directory C:\Windows\system32
Boot Device \Device\HarddiskVolume2
Locale United States
Hardware Abstraction Layer Version = "6.0.6001.18000"
User Name DD31T2D1\Student
Time Zone Easte rn Daylight Time
Installed Physical Memory (RAM) 4.00 GB
Total Physical Memory 2.00 GB
Available Physical Memory 1.14 GB
Total Virtual Memory 4.23 GB
Available Virtual Memory 3.39 GB
Page File Space 2.29 GB
Page File C:\pagefile.sys

Thanks.

Originally Posted by roy69

Are you using a laptop or intergrated graphics?
Update your system spec in User CP (top left)

Done. I have a Dell Latitude d820 with a T7600 processor, and an Nvidia Quadro 120

Originally Posted by usasma

Please check this:
Go to Start and type in "msconfig" (without the quotes) and press Enter
Click on the Boot tab, then on the Advanced Options button
Is the Maximum memory box checked?
If so, what does it specify for the number immediately beneath it?

If this is the case, try unchecking the maximum memory box, then click OK to exit the dialogs. Reboot to see if it fixes the issue.

It is unchecked. I also tried booting it checked, set to 4096, to no avail.

this what microsoft have to say on the issue

This behavior is the expected result of certain hardware and software factors.

Various devices in a typical computer require memory-mapped access. This is known as memory-mapped I/O (MMIO). For the MMIO space to be available to 32-bit operating systems, the MMIO space must reside within the first 4 GB of address space.

For example, if you have a video card that has 256 MB of onboard memory, that memory must be mapped within the first 4 GB of address space. If 4 GB of system memory is already installed, part of that address space must be reserved by the graphics memory mapping. Graphics memory mapping overwrites a part of the system memory. These conditions reduce the total amount of system memory that is available to the operating system.

The reduction in available system memory depends on the devices that are installed in the computer. However, to avoid potential driver compatibility issues, the 32-bit versions of Windows Vista limit the total available memory to 3.12 GB. See the "More information" section for information about potential driver compatibility issues.

If a computer has many installed devices, the available memory may be reduced to 3 GB or less. However, the maximum memory available in 32-bit versions of Windows Vista is typically 3.12 GB.

I'm aware of that issue.

What I am addressing is different.

Thanks though.

why do you think its differant?

Originally Posted by archie123

why do you think its differant?

Because I am only getting 2GB of RAM available.
With 512 megs reserved for the system, and a 256 meg video card, I should have at least 3GB available.