Operating System Unsupportecd

I was running Battlefield 3 on my system fine, but had problems, uninstaaled.   But now when I try to run the install it tells me I need to upgrade my operating system.  THe following are the stats on my system. HELP!

• Processor
  • CPU_Name: Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz
  • CPU_Manufacturer: GenuineIntel
  • CPU_Caption: Intel64 Family 6 Model 42 Stepping 7
  • CPU_Version:
  • CPU_ProcessorId: BFEBFBFF000206A7
  • CPU_CurrentClockSpeed: 3401MHz
  • CPU_AddressWidth: 64Bits
  • CPU_DataWidth: 64Bits
  • CPU_SocketDesignation: CPU 1
• Verified Hardware Device against Order: VARIABLEXYZ
• Verify Correct Processor Frequency

System Memory BIOS Information

• BIOS_Manufacturer: Alienware
• BIOS_Name: BIOS Date: 05/25/11 09:41:30 Ver: 04.06.04
• BIOS_Version1: A06
• BIOS_Version2: ALWARE - 1072009

Motherboard Information

• MB_Manufacturer: Alienware
• MB_Product: 046MHW
• MB_SerialNumber: ..CN697021B20954.
• MB_Version: A00

Video Adapter

• Video_Caption: AMD Radeon HD 6900 Series
• Video_AdapterRAM: 0MB
• Video_DriverVersion: 8.850.0.0

Hard Drive(s)

• MTFDDAK512MAM-1K1AB
  • Disk_Model: MTFDDAK512MAM-1K1AB
  • Disk_Size: 512 GB
  • Disk_Partitions: 3
  • Disk_TotalHeads: 255
  • Disk_TotalCylinders: 62260
  • Disk_TotalTracks: 15876300
  • Disk_TracksPerCylinder: 255
• WDC WD6000HLHX-75JJPV0
  • Disk_Model: WDC WD6000HLHX-75JJPV0
  • Disk_Size: 600 GB
  • Disk_Partitions: 1
  • Disk_TotalHeads: 255
  • Disk_TotalCylinders: 72961
  • Disk_TotalTracks: 18605055
  • Disk_TracksPerCylinder: 255

Optical Drives / Other Storage

• HL-DT-ST DVDRWBD CH20N
• PLDS DVD+-RW DH-24ABS

OperatingSystem: MS Windows 7 Ultimate Edition DirectXVersion: DirectX 11 IRQ Configuration

• 0 System timer
• 1 -empty-
• 2 -empty-
• 3 -empty-
• 4 -empty-
• 5 Intel(R) 6 Series/C200 Series Chipset Family SMBus Controller - 1C22
• 6 -empty-
• 7 -empty-
• 8 System CMOS/real time clock
• 9 -empty-
• 10 -empty-
• 11 -empty-
• 12 -empty-
• 13 Numeric data processor
• 14 -empty-
• 15 -empty-
• 16 2nd generation Intel® Core™ processor family PCI Express Controller - 0101
• 16 2nd generation Intel® Core™ processor family PCI Express Controller - 0105
• 16 Intel(R) 6 Series/C200 Series Chipset Family PCI Express Root Port 2 - 1C12
• 16 Intel(R) 6 Series/C200 Series Chipset Family USB Enhanced Host Controller - 1C2D
• 17 High Definition Audio Controller
• 17 Intel(R) 6 Series/C200 Series Chipset Family PCI Express Root Port 1 - 1C10
• 18 VIA 1394 OHCI Compliant Host Controller
• 19 Intel(R) Desktop/Workstation/Server Express Chipset SATA AHCI Controller
• 19 JMicron JMB36X Controller
• 22 High Definition Audio Controller
• 23 Intel(R) 6 Series/C200 Series Chipset Family USB Enhanced Host Controller - 1C26
• 190 Microsoft ACPI-Compliant System

Miscellaneous Final Checks Installed Devices Drivers

• AMD High Definition Audio Device, 11-17-2010, 7.12.0.7700
• Microsoft Streaming Service Proxy, 6-21-2006, 6.1.7600.16385
• VIA 1394 OHCI Compliant Host Controller, 6-21-2006, 6.1.7601.17514
• WDC WD6000HLHX-75JJPV0, 6-21-2006, 6.1.7600.16385
• Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz, 6-21-2006, 6.1.7600.16385
• Generic volume shadow copy, 6-21-2006, 6.1.7600.16385
• AMD High Definition Audio Device, 11-17-2010, 7.12.0.7700
• JMicron JMB36X Controller, 8-10-2010, 1.17.58.2
• Generic volume shadow copy, 6-21-2006, 6.1.7600.16385
• AMD Radeon HD 6900 Series, 4-19-2011, 8.850.0.0
• Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz, 6-21-2006, 6.1.7600.16385
• Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz, 6-21-2006, 6.1.7600.16385
• Realtek High Definition Audio, 2-15-2011, 6.0.1.6309
• Generic volume shadow copy, 6-21-2006, 6.1.7600.16385
• Microsoft Streaming Tee/Sink-to-Sink Converter, 6-21-2006, 6.1.7600.16385
• AMD Radeon HD 6900 Series, 4-19-2011, 8.850.0.0
• Generic volume shadow copy, 6-21-2006, 6.1.7600.16385
• Bluetooth 2.1+EDR USB Device, 8-24-2010, 3.0.2.272
• HID-compliant device, 6-21-2006, 6.1.7601.17514
• Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz, 6-21-2006, 6.1.7600.16385
• Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz, 6-21-2006, 6.1.7600.16385
• Microsoft Streaming Tee/Sink-to-Sink Converter, 6-21-2006, 6.1.7600.16385
• USB Input Device, 6-21-2006, 6.1.7601.17514
• Generic volume shadow copy, 6-21-2006, 6.1.7600.16385
• HL-DT-ST DVDRWBD CH20N, 6-21-2006, 6.1.7601.17514
• Generic volume shadow copy, 6-21-2006, 6.1.7600.16385
• Intel(R) Desktop/Workstation/Server Express Chipset SATA AHCI Controller, 9-13-2010, 10.0.0.1046
• Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz, 6-21-2006, 6.1.7600.16385
• Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz, 6-21-2006, 6.1.7600.16385
• Generic volume shadow copy, 6-21-2006, 6.1.7600.16385
• PLDS DVD+-RW DH-24ABS, 6-21-2006, 6.1.7601.17514
• Generic volume shadow copy, 6-21-2006, 6.1.7600.16385
• Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz, 6-21-2006, 6.1.7600.16385
• MTFDDAK512MAM-1K1AB, 6-21-2006, 6.1.7600.16385
• Realtek PCIe GBE Family Controller, 3-22-2010, 7.18.322.2010
• Generic volume shadow copy, 6-21-2006, 6.1.7600.16385