Missing operating system

Discussion in 'Windows 7 Help and Support' started by Jesper, Mar 9, 2010.

  1. Jesper

    Jesper New Member

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    Hi all,

    I've had Windows 7 since the release date, but for some reason it has stopped working. I can start up my PC, but at the login screen it crashes (sometime bluescreen, sometimes not). I tried safe mode, debug mode, CD-boot, system repair, but it just crashes when I get past the part where Windows does some basic starting.

    The problem started today, I went downstairs to get some breakfast, and when I came back my PC was restarting. Then I tried starting it again, but it crashed on the login screen (blue screen). At that point I was able to get into safe mode, but for some reason I'm not able to do that either anymore.

    Then I tried "Optimized settings" in my BIOS, and now it sais "Operating system missing". I already tried booting from the CD. I went into command prompt in the "repair PC" screen, and tried:
    Bootrec.exe/fixmbr
    Bootrec.exe/fixboot
    Bootrec.exe/rebuildbcd

    But all with no luck. It did find my OS tho on the C partition, but for some reason it said "Element not found" on fixboot.


    Does anyone have a clue what could fix my problem?

    -----
    OS
    Windows 7 Ultimate
    CPU
    Intel Core i7 920
    Motherboard
    Gigabyte GA-EX58-UD5
    Memory
    Corsair Triple3X Dominator 6GB DDR3-1866 CL9 triple kit
    Graphics Card(s)
    Club 3D Radeon HD5870
    Sound Card
    N/A
    Monitor(s) Displays
    1. Dell 2408WFP. 2. Iiyama ProLite E431S. 3. Sony TV
    Screen Resolution
    1. 1920x1200. 2. 1280x1024. 3. ?x?
    Hard Drives
    2x WD Caviar Black 500GB (RAID 0)
    1x OCZ Vertex 60GB SSD
    PSU
    Corsair HX750W
    Case
    Cooler Master CM690
    Cooling
    Stock
    Keyboard
    Logitech G15 v2
    Mouse
    Logitech G9
    -----


    Thanks,

    Jesper
     
  2. busydog

    busydog New Member

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    I've seen problems like this fixed with a simple CHKDSK. You will need a utility boot disk that can run CHKDSK.
     
  3. Saltgrass

    Saltgrass Excellent Member
    Microsoft Community Contributor

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    It seems the optimize bios settings changed some basic part of your system. I am not familar with how that works, but if it changed the hard drive order, you might change it back.

    You have a lot of video stuff and video drivers are one of the main causes for blue screens. Perhaps a Windows update changed you video driver.

    If you can get back into safe mode, you might check to see if any were added in that period. You might also try doing a restore if you get your system back to where it is trying to boot correctly.
     
  4. Jesper

    Jesper New Member

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    Okay, it's weird, but the entire problem is fixed. The missing operating system message came from loading the "Optimized defaults" in the BIOS, which disabled the RAID. When I enabled the RAID again, the operating system was found again. What is weird tho, is that it also doesn't crash on login anymore... Strange.
     

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