Windows 8 and 8.1 Forums

Removing Windows 8

  1. #11


    Posts : 10
    Windows 8.1


    Didn't come with a manual and can't find one online

      My System SpecsSystem Spec

  2. #12


    Posts : 1
    Windows 8.1


    Hola Doodalydoo.

    I have exactly same laptop you have. I went thru same thing you did. FOUND SOLUTION!! BIOS version 1.10 does not support CSM setting. If you update BIOS to 1.30 - it will then support CSM setting. Check your BIOS version - if it is 1.10 then its old. Go to Toshiba website and download newer version 1.30. It can be found at
    Satellite C55-A5104 Support | Toshiba. No need for CDs in updating BIOS. If you using Google Chrome, click on 'BIOS version 1.30'

    Then click on blue 'Download' button. Once download is complete, look at bottom left corner and click on 'install BIOS 1.30'. Follow instruction on screen. Once restarting computer complete. Go back to BIOS screen and check the version - it should show 1.30 version.
    Disable Secured Boot. Then check if you have the UEFI/CSM setting. Change setting to CSM. Then change boot setting to ODD. Then put in your Windows 7 CD (make sure you have product key too). Restart computer and Windows 7 installation should appears. GOOD LUCK!

    Last edited by Topazchai; 26 Apr 2014 at 15:41. Reason: Forgot important step
      My System SpecsSystem Spec

  3. #13


    Posts : 10
    Windows 8.1


    Quote Originally Posted by Topazchai View Post
    Hola Doodalydoo.

    I have exactly same laptop you have. I went thru same thing you did. FOUND SOLUTION!! BIOS version 1.10 does not support CSM setting. If you update BIOS to 1.30 - it will then support CSM setting. Check your BIOS version - if it is 1.10 then its old. Go to Toshiba website and download newer version 1.30. It can be found at
    Satellite C55-A5104 Support | Toshiba. No need for CDs in updating BIOS. If you using Google Chrome, click on 'BIOS version 1.30'

    Then click on blue 'Download' button. Once download is complete, look at bottom left corner and click on 'install BIOS 1.30'. Follow instruction on screen. Once restarting computer complete. Go back to BIOS screen and check the version - it should show 1.30 version.
    Disable Secured Boot. Then check if you have the UEFI/CSM setting. Change setting to CSM. Then change boot setting to ODD. Then put in your Windows 7 CD (make sure you have product key too). Restart computer and Windows 7 installation should appears. GOOD LUCK!

    Yes I've done that already, but thanks for the headsup anyway. Glad Toshiba finally fixed this problem
      My System SpecsSystem Spec

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