Why can't I install an other OS

System Information

Time of this report: 3/25/2012, 01:34:43 Machine name: Operating System: Windows 7 Home Premium 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.111118-2330) Language: Dutch (Regional Setting: Dutch) System Manufacturer: MEDIONPC System Model: MS-7728 BIOS: BIOS Date: 08/15/11 19:04:38 Ver: 04.06.04 Processor: Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz (8 CPUs), ~3.4GHz Memory: 8192MB RAM Available OS Memory: 8174MB RAM Page File: 3727MB used, 12618MB 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: 6.01.7601.17514 32bit Unicode

Display Devices

      Card name: NVIDIA GeForce GTX 550 Ti
   Manufacturer: NVIDIA
      Chip type: GeForce GTX 550 Ti
       DAC type: Integrated RAMDAC
     Device Key: Enum\PCI\VEN_10DE&DEV_1244&SUBSYS_26121462&REV_A1
 Display Memory: 4065 MB

Dedicated Memory: 993 MB Shared Memory: 3071 MB Current Mode: 1920 x 1080 (32 bit) (60Hz) Monitor Name: Algemeen PnP-beeldscherm Monitor Model: Acer P226HQV Monitor Id: ACR01C7 Native Mode: 1920 x 1080(p) (60.000Hz) Output Type: HD15 Driver Name: nvd3dumx.dll,nvwgf2umx.dll,nvwgf2umx.dll,nvd3dum,nvwgf2um,nvwgf2um Driver File Version: 8.17.0012.7533 (English) Driver Version: 8.17.12.7533 DDI Version: 11 Driver Model: WDDM 1.1 Driver Attributes: Final Retail Driver Date/Size: 5/21/2011 06:01:00, 15223912 bytes WHQL Logo'd: Yes WHQL Date Stamp: Device Identifier: {D7B71E3E-5104-11CF-BF6A-1E061FC2C535} Vendor ID: 0x10DE Device ID: 0x1244 SubSys ID: 0x26121462 Revision ID: 0x00A1 Driver Strong Name: oem8.inf:NVIDIA_SetA_Devices.NTamd64.6.1:Section005:8.17.12.7533:pci\ven_10de&dev_1244 Rank Of Driver: 00E62001 Video Accel: ModeMPEG2_A ModeMPEG2_C ModeVC1_C ModeWMV9_C

   D3D9 Overlay: Supported
        DXVA-HD: Supported
   DDraw Status: Enabled
     D3D Status: Enabled
     AGP Status: Enabled

      Card name: NVIDIA GeForce GTX 550 Ti
   Manufacturer: NVIDIA
      Chip type: GeForce GTX 550 Ti
       DAC type: Integrated RAMDAC
     Device Key: Enum\PCI\VEN_10DE&DEV_1244&SUBSYS_26121462&REV_A1
 Display Memory: 4065 MB

Dedicated Memory: 993 MB Shared Memory: 3071 MB Current Mode: 1920 x 1080 (32 bit) (60Hz) Monitor Name: Algemeen PnP-beeldscherm Monitor Model: Acer P226HQV Monitor Id: ACR01C7 Native Mode: 1920 x 1080(p) (60.000Hz) Output Type: HD15 Driver Name: nvd3dumx.dll,nvwgf2umx.dll,nvwgf2umx.dll,nvd3dum,nvwgf2um,nvwgf2um Driver File Version: 8.17.0012.7533 (English) Driver Version: 8.17.12.7533 DDI Version: 11 Driver Model: WDDM 1.1 Driver Attributes: Final Retail Driver Date/Size: 5/21/2011 06:01:00, 15223912 bytes WHQL Logo'd: Yes WHQL Date Stamp: Device Identifier: {D7B71E3E-5104-11CF-BF6A-1E061FC2C535} Vendor ID: 0x10DE Device ID: 0x1244 SubSys ID: 0x26121462 Revision ID: 0x00A1 Driver Strong Name: oem8.inf:NVIDIA_SetA_Devices.NTamd64.6.1:Section005:8.17.12.7533:pci\ven_10de&dev_1244 Rank Of Driver: 00E62001 Video Accel: ModeMPEG2_A ModeMPEG2_C ModeVC1_C ModeWMV9_C Deinterlace Caps: {6CB69578-7617-4637-91E5-1C02DB810285}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX D3D9 Overlay: Supported DXVA-HD: Supported DDraw Status: Enabled D3D Status: Enabled AGP Status: Enabled