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Windows 7 64 bit seeing only 2.87 of 4gb memory

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December 9, 2009 5:43:31 AM

hi,

my windows 7 64 bit system is only seeing 2.87gb of the 4gb installed memory. checking the Resource Monitor, it says 1153gb has been allocated to Hardware Reserved. any idea how i can use all the memory? i have already tried unchecking Maximum memory under msconfig/boot/advanced options without success. below is my system properties.

OS Name Microsoft Windows 7 Ultimate
Version 6.1.7600 Build 7600
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Name SOLO-PC
System Manufacturer System Manufacturer
System Model IL9 Pro
System Type x64-based PC
Processor Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz, 2400 Mhz, 2 Core(s), 2 Logical Processor(s)
BIOS Version/Date American Megatrends Inc. 080012, 9/17/2007
SMBIOS Version 2.3
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 solo-PC\solo
Time Zone Pacific Standard Time
Installed Physical Memory (RAM) 4.00 GB
Total Physical Memory 2.87 GB
Available Physical Memory 1.83 GB
Total Virtual Memory 4.87 GB
Available Virtual Memory 3.66 GB
Page File Space 2.00 GB
Page File C:\pagefile.sys

More about : windows bit 4gb memory

December 9, 2009 6:19:25 AM

sorry, let me rephrase... only 2.87gb is useable.
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December 9, 2009 4:09:08 PM

What video card you running?
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Related resources
December 9, 2009 4:14:45 PM

256mb pci-e geforce 8600gts
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December 9, 2009 4:18:05 PM

thanks for all the replies, i believe its due to the 945p chipset limitation.

Quote - Wikipedia
Lakeport chipsets lacks support for remapping memory; the size of addressable memory space may be less than 4GB, regardless whether the processor operates in 64-bit mode.
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a c 110 } Memory
a c 403 $ Windows 7
December 9, 2009 11:33:43 PM

bios upgrade maybe!
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a b $ Windows 7
December 10, 2009 3:36:29 PM

I believe the Kernal is reserving some of that RAM for its own purpose, just like how 2GB was set aside for the kernal by default on Win32. I have no way to confirm this though...
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December 11, 2009 6:47:18 PM

SR-71 Blackbird said:
bios upgrade maybe!


my motherboard does have the latest bios, however it was made in 2007. abit went out of business in 2008 so i doubt there will ever be an update.
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a b $ Windows 7
December 12, 2009 7:59:53 AM

I have a similar problem. I have 12GB installed, but only 4GB show up as usable both in the BIOS and under Computer Properties. My computer components are listed under my profile.

System Information shows:

OS Name Microsoft Windows 7 Ultimate
Version 6.1.7600 Build 7600
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Name SHADOWFAX
System Manufacturer System Manufact
System Model System Product
System Type x64-based PC
Processor Intel(R) Core(TM) i7 CPU 975 @ 3.33GHz, 1729 Mhz, 4 Core(s), 8 Logical Processor(s)
BIOS Version/Date Phoenix Technologies, LTD 6.00 PG, 6/19/2009
SMBIOS Version 2.5
Windows Directory C:\Windows
System Directory C:\Windows\system32
Boot Device \Device\HarddiskVolume1
Locale United States
Hardware Abstraction Layer Version = "6.1.7600.16385"
User Name SHADOWFAX\Gandalf
Time Zone Pacific Standard Time
Installed Physical Memory (RAM) 12.0 GB
Total Physical Memory 4.00 GB
Available Physical Memory 1.43 GB
Total Virtual Memory 7.99 GB
Available Virtual Memory 5.20 GB
Page File Space 4.00 GB
Page File C:\pagefile.sys
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a c 80 } Memory
a b $ Windows 7
December 13, 2009 2:12:50 PM

Gandalf, your problem is different. Are you using Windows 7 32-bit instead of 64-bit?
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December 13, 2009 4:02:02 PM

Exactly, I agree with the last post.. There could only be two explanations. The most likely is that you are running 32-bit version of windows. The other is that you need a bios upgrade...
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a b $ Windows 7
December 13, 2009 7:09:41 PM

I solved my own problem, thanks. I reseated all the strips and now the BIOS and Windows Properties see all of the 12GB.
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a c 80 } Memory
a b $ Windows 7
December 13, 2009 8:02:18 PM

If the modules were not fully inserted, then the BIOS probably didn't see all 12GB either.
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!