Hello, Sorry to bother you on this fine morning, but i have been having this problem for a long time! Before upgrading to the RC of Windows 7, My Windows Vista Premium only showed 2GB of my 4GB of installed RAM. (2x2GB RAM Sticks). Upon upgrading to the release client the problem was still there, and despite trying several solutions, mainly to do with the Memory Hole remapping ( i have tried this on all the combinations it could have been and the problem is still there)! Im just wondering if there is another way to get Windows 7 to use all 4 GB of my RAM. Following is my System information as Windows sees it. System Information ------------------ Time of this report: 7/28/2009, 13:44:03 Machine name: ******** Operating System: Windows 7 Ultimate 64-bit (6.1, Build 7100) (7100.winmain_win7rc.090421-1700) Language: English (Regional Setting: English) System Manufacturer: Foxconn System Model: P35 BIOS: Default System BIOS Processor: Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz (4 CPUs), ~2.4GHz Memory: 2048MB RAM Available OS Memory: 2048MB RAM Page File: 1459MB used, 2635MB available Windows Dir: C:\Windows DirectX Version: DirectX 11 DX Setup Parameters: Not found User DPI Setting: 96 DPI (100 percent) System DPI Setting: 96 DPI (100 percent) DWM DPI Scaling: Disabled DxDiag Version: 6.01.7100.0000 64bit Unicode ------------ DxDiag Notes ------------ Display Tab 1: No problems found. Sound Tab 1: No problems found. Sound Tab 2: No problems found. Input Tab: No problems found. -------------------- DirectX Debug Levels -------------------- Direct3D: 0/4 (retail) DirectDraw: 0/4 (retail) DirectInput: 0/5 (retail) DirectMusic: 0/5 (retail) DirectPlay: 0/9 (retail) DirectSound: 0/5 (retail) DirectShow: 0/6 (retail) --------------- Display Devices --------------- Card name: NVIDIA GeForce 8600 GTS Manufacturer: NVIDIA Chip type: GeForce 8600 GTS DAC type: Integrated RAMDAC Device Key: Enum\PCI\VEN_10DE&DEV_0400&SUBSYS_2A86107D&REV_A1 Display Memory: 1013 MB Dedicated Memory: 245 MB Shared Memory: 767 MB Current Mode: 1440 x 900 (32 bit) (60Hz) Monitor Name: Generic PnP Monitor Monitor Model: Acer AL1916W Monitor Id: ACRAD86 Native Mode: 1440 x 900(p) (59.887Hz) Output Type: HD15 Driver Name: nvd3dumx.dll,nvwgf2umx.dll,nvwgf2umx.dll,nvd3dum,nvwgf2um,nvwgf2um Driver File Version: 8.15.0011.8585 (English) Driver Version: 8.15.11.8585 DDI Version: 10 Driver Model: WDDM 1.1 Driver Attributes: Final Retail Driver Date/Size: 4/30/2009 22:02:00, 9443840 bytes WHQL Logo'd: Yes WHQL Date Stamp: Device Identifier: {D7B71E3E-4740-11CF-4452-8D0A01C2C535} Vendor ID: 0x10DE Device ID: 0x0400 SubSys ID: 0x2A86107D Revision ID: 0x00A1 ------------- Sound Devices ------------- Description: Speakers (High Definition Audio Device) Default Sound Playback: Yes Default Voice Playback: Yes Hardware ID: HDAUDIO\FUNC_01&VEN_10EC&DEV_0888&SUBSYS_105B0CE7&REV_1000 Manufacturer ID: 1 Product ID: 65535 Type: WDM Driver Name: HdAudio.sys Driver Version: 6.01.7100.0000 (English) Driver Attributes: Final Retail WHQL Logo'd: Yes Date and Size: 4/22/2009 05:15:37, 350208 bytes Other Files: Driver Provider: Microsoft HW Accel Level: Basic Cap Flags: 0xF1F Min/Max Sample Rate: 100, 200000 Static/Strm HW Mix Bufs: 1, 0 Static/Strm HW 3D Bufs: 0, 0 HW Memory: 0 Voice Management: No EAX(tm) 2.0 Listen/Src: No, No I3DL2(tm) Listen/Src: No, No Sensaura(tm) ZoomFX(tm): No Description: Digital Audio (S/PDIF) (High Definition Audio Device) Default Sound Playback: No Default Voice Playback: No Hardware ID: HDAUDIO\FUNC_01&VEN_10EC&DEV_0888&SUBSYS_105B0CE7&REV_1000 Manufacturer ID: 1 Product ID: 65535 Type: WDM Driver Name: HdAudio.sys Driver Version: 6.01.7100.0000 (English) Driver Attributes: Final Retail WHQL Logo'd: Yes Date and Size: 4/22/2009 05:15:37, 350208 bytes Other Files: Driver Provider: Microsoft HW Accel Level: Basic Cap Flags: 0xF1F Min/Max Sample Rate: 100, 200000 Static/Strm HW Mix Bufs: 1, 0 Static/Strm HW 3D Bufs: 0, 0 HW Memory: 0 Voice Management: No EAX(tm) 2.0 Listen/Src: No, No I3DL2(tm) Listen/Src: No, No Sensaura(tm) ZoomFX(tm): No --------------------- Sound Capture Devices --------------------- Description: Microphone (High Definition Audio Device) Default Sound Capture: Yes Default Voice Capture: Yes Driver Name: HdAudio.sys Driver Version: 6.01.7100.0000 (English) Driver Attributes: Final Retail Date and Size: 4/22/2009 05:15:37, 350208 bytes Cap Flags: 0x1 Format Flags: 0xFFFFF

Wolfy - Welp... The simplest, most obvoius question - does the motherboard's BIOS see all 4 GB? If it doesn't, it's definitelya hardware issue. If this is the case, then you can try the usual things - pulling both sticks out, insert one stick at a time, boot and see if the memory registers. If one doesn't register - it's likely a dead stick of RAM. Ifboth register individually, make sure both sticks of RAM are firmly and correctly installed on the motherboard. IF it still doesn't register both, try the other slots (assuming your motherboard has 4 or more slots). One of the sockets on the motherboard may be bad. You may need to exercise your warranty if that's still applicable.If the BIOS does see all 4 GB, then yes, we may have an issue that needs to be tracked down.Let us know what you find...

Did you make sure the RAM is properly seated on the board? Sometimes if it is not seated properly, the system will be unable to recognize it.Hello! Please try every solution given to your problem...and reply back with its results...Click here for my thread on Win7 min. requirements - JoelbX

To add one thing: As opposed to other cases, "memory remapping" will not serve you in your special config. Think only of the fact that virtual memory (pagefile) is usually set to 1.5-2 x the installed RAM. What are your values showing? 1459 + 2635 = 4094 MB. That looks like exactly 2 x 2048 (well, nearly). So, we must assume that the rest of your 4 G is simply not seen by Windows, because BIOS doesn't report it.Mobile AMD64 3000+, VIA Apollo K8T800 chipset, 1 G RAM, ATIRadeonMobility 9700, 20x DVDRW, C:XPSP3 (55G),D:WIN7 (25G),F:DATA (250G)