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Accidently reset BIOS.. missing operating system help

By wookieecrisp
Dec 13, 2009
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  1. Hi guys,

    I've accidentally reset my bios and now whenever I boot it says "missing operating system"! I have an Alienware Aurora and I really don't want to reinstall the whole os... please help is there a way I can get it back??
     
  2. kimsland

    kimsland Ex-TechSpotter Posts: 18,353

    Running Bios Setup Defaults should not have done that
    Unless you have your Windows system drive not connected internally in the right spot?
     
  3. wookieecrisp

    wookieecrisp TS Rookie Topic Starter Posts: 26

    *EDIT* I think you might be right, when in windows setup it says my HDD is only 900 GB, it is supposed to be 2TB RAID 0. But in BIOS it detects 2 HDDs, each of 1TB.
     
  4. kimsland

    kimsland Ex-TechSpotter Posts: 18,353

    Raid0 ?

    If you have Raid Setup, then you need to go through the Raid Setup settings screen
    Also enable Raid in Bios, then Save and Exit
    I really hope you haven't mucked up your Raid config
     
  5. wookieecrisp

    wookieecrisp TS Rookie Topic Starter Posts: 26

    YES!!! I finally got windows to start by switching some HD mode to "RAID" Thank you SO MUCH!
     
  6. kimsland

    kimsland Ex-TechSpotter Posts: 18,353

    Thanks for the update :grinthumb
     
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