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I have installed Windows 7 Ultimate x64. In System Properties, Windows tells me I have 4Gb RAM but only 3Gb is usable, displayed in the following format:
Installed memory (RAM): 4.00 GB (3.00 GB usable)
Previous to this installation, I had Vista Ultimate x64 installed and that always showed 4GB and all of it was usuable. What is it about Windows 7 that has changed this? If this is indeed a problem caused by BIOS settings, I have not altered them in any way so does this mean that Windows 7 changes the BIOS settings at the point of install?
I do not believe this to be related to some memory being allocated to my Graphics Card, it already has 512MB of dedicated memory. Why would Windows 7 assign it another 1GB of RAM, giving me a total of 1.5GB graphics memory? As I said, this was NEVER a problem on Vista Ultimate x64.
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
Hello AshK86,
Thank you for posting on Microsoft Answers Forums.
Can you list what model motherboard, processor and graphics card you are using? The “Hardware or BIOS reserved” is pointing towards the type of motherboard you have. I know you said you didn’t see this with Vista, but let’s make sure we rule it out just in case.
Regards,
Edgar
Microsoft Answers Support Engineer
Visit our Microsoft Answers Feedback Forum and let us know what you think.
Dave, try selecting "use max mem" and reboot then unselect "use max mem" and reboot... see if that works
Have Dave,
which Mainbaord do you have? Which chipset does it have? Did you enable the Memory Remapping fetaure inside the BIOS?
André
"A programmer is just a tool which converts caffeine into code" CLIP- Stellvertreter http://www.winvistaside.de/
Doesn't work for me. I've got both boxes unchecked, and it still says "4.00GB (3.00 GB usable)
I have a Compaq 6910p notebook and Windows Ultimate 64bit. (PC Info below)
OS Name Microsoft Windows 7 Ultimate
Version 6.1.7600 Build 7600
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Name hidden by me
System Manufacturer Hewlett-Packard
System Model HP Compaq 6910p
System Type x64-based PC
Processor Intel(R) Core(TM)2 Duo CPU T7300 @ 2.00GHz, 2001 Mhz, 2 Core(s), 2 Logical Processor(s)
BIOS Version/Date Hewlett-Packard 68MCD Ver. F.0A, 9/13/2007
SMBIOS Version 2.4
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 hiddenbyme
Time Zone Eastern Standard Time
Installed Physical Memory (RAM) 4.00 GB
Total Physical Memory 3.00 GB
Available Physical Memory 1.42 GB
Total Virtual Memory 6.00 GB
Available Virtual Memory 3.63 GB
Page File Space 3.00 GB
Page File C:\pagefile.sys
I would love to have an answer to this.
Dave
DaveC
I too am having the same problem. Windows Ultimate x64 RTM
<< Display Details >>>
Name NVIDIA GeForce 7300 GT
PNP Device ID PCI\VEN_10DE&DEV_0393&SUBSYS_0393196E&REV_A1\4&2921F064&0&0010
Adapter Type GeForce 7300 GT, NVIDIA compatible
Adapter Description NVIDIA GeForce 7300 GT
Adapter RAM 256.00 MB (268,435,456 bytes)
Installed Drivers nvd3dumx.dll,nvd3dum
Driver Version 8.17.11.9562
INF File oem21.inf (Section001 section)
Color Planes Not Available
Color Table Entries 4294967296
Resolution 1680 x 1050 x 59 hertz
Bits/Pixel 32
Memory Address 0xFD000000-0xFDFFFFFF
Memory Address 0xC0000000-0xFF77FFFF
Memory Address 0xFC000000-0xFCFFFFFF
I/O Port 0x0000BC00-0x0000BC7F
IRQ Channel IRQ 24
I/O Port 0x000003B0-0x000003BB
I/O Port 0x000003C0-0x000003DF
Memory Address 0xA0000-0xBFFFF
Driver c:\windows\system32\drivers\nvlddmkm.sys (8.17.11.9562, 13.06 MB (13,694,056 bytes), 11/28/2009 6:41 PM)
<<< Conflicts/Sharing >>>
I/O Port 0x00000000-0x00000CF7 PCI bus
I/O Port 0x00000000-0x00000CF7 Direct memory access controller
I/O Port 0x000003C0-0x000003DF NVIDIA GeForce 7300 GT
I/O Port 0x000003C0-0x000003DF VIA PCI to PCI Bridge Controller
IRQ 21 VIA Rev 5 or later USB Universal Host Controller
IRQ 21 VIA Serial ATA Controller - 0591
IRQ 21 VIA USB Enhanced Host Controller
IRQ 23 VIA Rev 5 or later USB Universal Host Controller
IRQ 23 VIA Rhine II Fast Ethernet Adapter
Memory Address 0xC0000000-0xFF77FFFF PCI bus
Memory Address 0xC0000000-0xFF77FFFF NVIDIA GeForce 7300 GT
Memory Address 0xC0000000-0xFF77FFFF VIA PCI to PCI Bridge Controller
Memory Address 0xA0000-0xBFFFF PCI bus
Memory Address 0xA0000-0xBFFFF NVIDIA GeForce 7300 GT
Memory Address 0xA0000-0xBFFFF VIA PCI to PCI Bridge Controller
I/O Port 0x000003B0-0x000003BB NVIDIA GeForce 7300 GT
I/O Port 0x000003B0-0x000003BB VIA PCI to PCI Bridge Controller
<< mother board >>
ECS PT890T-A
Chipset VIA P4M890 V1.0
Southbridge - VIA VT8237A
LPCIO - ITE IT8718
American Megatrends Inc. BIOS (have the latest update)
Version 080013
12/19/2007
Intel Core 2 Duo E6320
Conroe
Socket 775 LGA
6320 @ 1.86 GHZ
Technology 65 nm
L1 Data 2 x 32 KBytes 8-way
L2 Data 2 x 32 KBytes 8-way
Level 2 4096 Kbytes 16-way
**Using CPU-Z info tool Memory is read as DDR2 Single Channel
Size 4096 MBytes
I would like to also get some resolve to this. This was one of the main reasons I upgraded to Windows 7 x64
Any help would be appreciated. I can email the full TXT CPU-Z report if needed. I believe this is definately Windows issue as my BIOS and CPU-Z both report a full 4096 MBytes of Memory.
