Missing operating system" error massage when system starts


  1. siyafkhan
    Posts : 3
    windows 7 home premium x64
       New #1

    Missing operating system" error massage when system starts


    Hai,

    "Missing operating system" massage is coming when i start my system and i am not able to start. I think because , i had given "mark partition as active" option for one hard dive (E) in disk management when last time i opened. it did not have any data. i did not know, this will make any problem. Now i am not able to boot windows re installation dvd also. i can only take BIOS settings. please any one suggest any way for rectifying this problem ASAP.
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  3. mckillwashere
    Posts : 1,849
    Windows 7 x86/x64, Server 2008r2, Web Server 2008
       New #2

    Try disconnecting all drives except for your main drive and powering your system back up.
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  4. siyafkhan
    Posts : 3
    windows 7 home premium x64
    Thread Starter
       New #3

    How to disconnect other drivers ?


    Thanks for replying, Please tell me, how i can disconnect all other drivers. i can able to acsess bios settings only..
    or
    How i can activate my c drive while booting. ?
    please reply.
    please describe
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  6. mckillwashere
    Posts : 1,849
    Windows 7 x86/x64, Server 2008r2, Web Server 2008
       New #4

    completely power the computer down and remove the power cord from the back then open up your computer and remove one cable from all of the drives except the main one more than likely the top one that is not a cd/dvd drive
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  7. siyafkhan
    Posts : 3
    windows 7 home premium x64
    Thread Starter
       New #5

    is there any option for mark partition as active in bios settings ?


    Thank you for your reply.
    since i do not have much hardware related knowledge, i have to approach any hardware expert.

    If any one has any another option, please suggest.

    is there any option for activate c drive partion in BIOS?
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  8. mckillwashere
    Posts : 1,849
    Windows 7 x86/x64, Server 2008r2, Web Server 2008
       New #6

    Unfortunately, there normally isnt a way to enable and disable drive in the Bios. However there may be someone around here that will be able to spend more time walking you though some software tools that could maybe solve your problem.
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  10. Layback Bear
    Posts : 25,847
    Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64
       New #7

    First please fill out your system specs completely. This will help us help you.
    No specs leads to guessing on how to help you.
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