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To the best of my knowledge Windows 7 comes loaded with DX 11. I ran the DirectXdianostic tool and found the following info:

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System Information

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Time of this report: 11/6/2010, 13:10:41

Operating System: Windows 7 Ultimate 32-bit (6.1, Build 7600) (7600.win7_gdr.100618-1621)

Language: English (Regional Setting: English)

System Manufacturer: INTEL

System Model: DG31PR

BIOS: BIOS Date: 01/23/08 15:53:32 Ver: 08.00.10

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Processor: Intel(R) Pentium(R) Dual CPU E2180 @ 2.00GHz, ~2.0GHz

Memory: 1024MB RAM

Available OS Memory: 1012MB RAM

Page File: 858MB used, 1177MB available

Windows Dir: C:\Windows

DirectX Version: DirectX 11

DX Setup Parameters: Not found

User DPI Setting: Using System DPI

System DPI Setting: 96 DPI (100 percent)

DWM DPI Scaling: Disabled

DxDiag Version: 6.01.7600.16385 32bit Unicode

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DxDiag Notes

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Display Tab 1: No problems found.

Sound Tab 1: No problems found.

Sound Tab 2: No problems found.

Sound Tab 3: No problems found.

Input Tab: No problems found.

Now here's the twist. When I ran the Intel diagnostic software to update my drivers, it gave the following result:

SYSTEM INFORMATION

Computer Manufacturer Intel Corporation

Computer Model DG31PR

Operating System (O/S) Microsoft Windows 7 Ultimate Edition

Operating System Build (O/S) (build 7600), 32-bit

Operating System (version) 6.1.7600

System RAM 1011.8 MB

CD or DVD Device HL-DT-ST DVD-RAM GH22NP20 ATA Device

System Hard Drive Overview

System Total Storage size: 149.0 GB

Local Disk F: 31.9 GB

Used space: 17.6 GB

Free Space: 14.3 GB

Local Disk E: 39.1 GB

Used space: 25.3 GB

Free Space: 13.7 GB

Local Disk C: 39.1 GB

Used space: 30.8 GB

Free Space: 8.2 GB

Local Disk D: 39.1 GB

Used space: 32.6 GB

Free Space: 6.4 GB

GRAPHICS INFORMATION

Graphics Product Intel® G33/G31

Graphics Driver Version 8.15.10.1749

3D Acceleration Yes

Hardware Transform & Lighting Support No

Video Memory 249.0 MB

Vertex Shader Support 0.0

Pixel Shader Support 2.0

Microsoft DirectX* Version 10.0

Why is there a contradiction ?

2010-11-06 16:26:00
HiDid you tried pcwizzard http://www.cpuid.com/softwares/pc-wizard.html also there is a microsoft hotfixThe DirectX Diagnostics Tool incorrectly reports DirectX 11 devices as DirectX 10.1 devices on a computer that is running Windows 7 or Windows Server 2008 R2http://support.microsoft.com/kb/975243When you run the DirectX Diagnostics Tool (Dxdiag.exe) on a computer that is running Windows 7 or Windows Server 2008 R2, the diagnostic tool incorrectly reports a DirectX 11 device as a DirectX 10.1 device. This incorrect version information is shown in the DDI field on the Display tab. This problem is only a reporting error. This problem does not affect the DirectX 11 hardware or software functionality of the graphics card.