Windows 8 and 8.1 Forums


COA Change when upgrading from Windows 8 to Windows 8.1?

  1. #1

    COA Change when upgrading from Windows 8 to Windows 8.1?


    Hello all. First post here. I have been having several issues with Windows 8 (more specifically Windows 8.1) within the past few months. Toshiba Customer Service has not been able to assist so I am somewhat at my wits end since I can't seem to find any relevant webpages that discuss my particular concern/issue.

    As I'm sure many of you on here are aware, or have any experienced, my Toshiba U845T-S4165 has been dropping WiFi access, switching to "Limited" WiFi status, or cannot connect to my network whatsoever. The most aggravating thing is that this happens at seemingly random times and frequency. I can go a week or two with no issue and then one day I have constant problems where I can't connect after repeated tries. I have trouble-shooted everything I can and have tried some workarounds I found online. I finally contacted Toshiba and all they did was delete my network driver and redownload/reinstall it. That seemed to stabilize the problem for about 8 days or so but now I am having consistent issues.

    I have read that many people started experiencing this problem after upgrading to Windows 8.1. While I can't say with absolute certainly that my problems began after upgrading, but they may have. So I am trying to revert to Windows 8. Now this would be a seemingly easy process however ignorantly and stupidly I did not create recovery media after I initially bought the laptop and built-in recovery drive has been, again stupidly, deleted during my upgrade process to 8.1. So in short, I have no recovery media.

    I did find a source online that sells Windows 8 downloadable software that I can download, burn to DVD, and then start from scratch. However, I must provide my own COA. I used Belarc Advisor to find my current COA. However, this COA is associated with Windows 8.1. So my ultimate question is: Will this COA work with a Windows 8 recovery media? Did the COA change when I upgraded from Windows 8 to 8.1? I don't want to start this process and then get screwed midway through because my COA isn't valid when downgrading.

    Sorry for the long, rambling post for a seemingly straight-to-the-point question but I wanted to provide some background info. Thanks in advance to anyone that can help me out.

      My System SpecsSystem Spec

  2. #2


    Posts : 5,592
    ME, XP,Vista,Win7,Win8,Win8.1


    Quote Originally Posted by BuckeyeAaron
    I did find a source online that sells Windows 8 downloadable software that I can download, burn to DVD, and then start from scratch. However, I must provide my own COA. I used Belarc Advisor to find my current COA. However, this COA is associated with Windows 8.1. So my ultimate question is: Will this COA work with a Windows 8 recovery media? Did the COA change when I upgraded from Windows 8 to 8.1? I don't want to start this process and then get screwed midway through because my COA isn't valid when downgrading.

    You can not use the key extracted from the UEFI/BIOS firmware to download the Windows 8.1 ISO, you can only use the key to ACTIVATE.
    The generic keys can only be used to install Windows 8.1 & not ACTIVATE or to download the Windows 8.1 ISO .

    You would to buy the DVD & Product Key.



    Quote Originally Posted by BuckeyeAaron
    I have read that many people started experiencing this problem after upgrading to Windows 8.1. While I can't say with absolute certainly that my problems began after upgrading, but they may have. So I am trying to revert to Windows 8. Now this would be a seemingly easy process however ignorantly and stupidly I did not create recovery media after I initially bought the laptop and built-in recovery drive has been, again stupidly, deleted during my upgrade process to 8.1. So in short, I have no recovery media.
    Updating Windows 8 to Windows 8.1 from the Windows Store will NOT DELETE the Recovery Partition.

    I would recommend you making the OEM manufacturer's Recovery DVD's or USB drive.
    How to make Toshiba Recovery disks.

    Toshiba How-To: Create System Recovery Media DVDs on a Windows 8 Laptop - YouTube
    Toshiba How-To: Understanding Windows 8 system recovery options - YouTube
    Creating Recovery Media for Windows 8 - TOSHIBA FORUMS
    or
    You can order the Microsoft official OEM Recovery disks from the OEM manufacturer's website.
    Toshiba Service Portal - Laptop Recovery Media Services - Toshiba
      My System SpecsSystem Spec

  3. #3


    Thanks for the reply. So it looks like buying Win8 through an online source (EZ93) isn't going to be my magic bullet...

    And I'm sorry but my recovery partition has been deleted. If not from upgrading to Windows 8.1 then it must have happened some other way through no means of my own. At least, I am about 99% recovery partition is gone. I have attempted it in the past and here is what happens:

    Press and hold 0 while restarting > Receive msg "The hard drive recovery process has been selected" > Select "Yes" > US Keyboard Layout selected > Troubleshoot > Reset PC > Choose Target Operating System > Windows 8.1 (only option I have) > "Unable to reset your PC. A required drive partition is missing."

    So if I am missing something please let me know.

    Or perhaps the better question to ask is, how do I revert to Windows 8 as painlessly and cheaply as possible? And if I do, any experience out there show that my WiFi woes will be solved?

    To be honest, I am seriously considering just dumping this PC off and picking up a MAC (which I thought I would never say) because this whole issue has been so frustrating. Doing so is obviously not fiscally prudent though.
      My System SpecsSystem Spec

  4. #4


    Posts : 5,592
    ME, XP,Vista,Win7,Win8,Win8.1
      My System SpecsSystem Spec

  5. #5


    Not sure if I did this correctly. Be patient. I am far from a PC expert.

    Click image for larger version
      My System SpecsSystem Spec

  6. #6


    Posts : 5,592
    ME, XP,Vista,Win7,Win8,Win8.1


    Not sure if I did this correctly. Be patient. I am far from a PC expert.
    The screenshot is file.

    The Toshiba Recovery Partition is NOT deleted.

    Try making the Toshiba Recovery DVD/USB disk.
      My System SpecsSystem Spec

  7. #7


    Ok. I will attempt it. But any idea why I am receiving the message I did when attempting to use the "Reset" feature?
      My System SpecsSystem Spec

  8. #8


    Posts : 5,592
    ME, XP,Vista,Win7,Win8,Win8.1


    The Windows 8.1 RESET will NOT use a Windows 8 Recovery Partition.
      My System SpecsSystem Spec

  9. #9


    OK. So by making the DVDs this will give me the ability to recover the Toshiba to factory settings (i.e. Windows 8), correct?
      My System SpecsSystem Spec

  10. #10


    Posts : 5,592
    ME, XP,Vista,Win7,Win8,Win8.1


    Quote Originally Posted by BuckeyeAaron View Post
    OK. So by making the DVDs this will give me the ability to recover the Toshiba to factory settings (i.e. Windows 8), correct?
    or Recovery USB drive.

    YES, it should do.
      My System SpecsSystem Spec

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