Windows 10: Unable to activate Windows after clearing CMOS Error 0x803FABC3

Discus and support Unable to activate Windows after clearing CMOS Error 0x803FABC3 in Windows 10 Software and Apps to solve the problem; I brought a copy of Windows 10 from MS Store and then updated to Windows 11. Everything was fine. Then I installed new RAM and it wasnt working right... Discussion in 'Windows 10 Software and Apps' started by LordThanos23, Jun 2, 2023.

  1. LORDTHANOS23
    LordThanos23 Win User

    Unable to activate Windows after clearing CMOS Error 0x803FABC3


    I brought a copy of Windows 10 from MS Store and then updated to Windows 11. Everything was fine. Then I installed new RAM and it wasnt working right and I noticed on the Corsair site if you are getting memory error you can try clearing CMOS to correct it so I did. Now I have a new set of RAM but Windows wont activate. I believe the core issue is I installed a TPM module so I could upgrade to Windows 11 and now I cannot turn off Secure Boot again and Windows Activation fails to see computer as the same device.Device name HomeDesktop Processor IntelR CoreTM i7-8700 CPU @ 3.20GHz 3.19 GHz

    :)
     
    LordThanos23, Jun 2, 2023
    #1
  2. SCOUTINGWRAITH
    scoutingwraith Win User

    clear CMOS

    As @Law- II said .....

    please fill your system specs.
    If you have a desktop motherboard i would suggest to see if you CMOS battery is not dead.
     
    scoutingwraith, Jun 2, 2023
    #2
  3. FABIOMC
    FabioMC Win User
    Boot only with cmos cleared

    Law-II: Thank u so much for helpinh but I had already done those steps. I'm testing with minimal hardware and single dimm at a2.

    As I said. If I clear CMOS or run MEMOK button the system boots and I can run windows8 stable and fine using F8 (boot menu) but whenever I restart or save any bios settings (save and restart) the system doesn't post anymore.
     
    FabioMC, Jun 2, 2023
    #3
  4. MAYRA AQU
    Mayra Aqu Win User

    Unable to activate Windows after clearing CMOS Error 0x803FABC3

    windows update Error 0xC004F074 Windows not activated

    Hi Lucas,

    We would appreciate if you could provide more details about the issue. Is your computer connected to a (domain) secured network? Aside from updating the computer, have you performed any changes prior to the issue?

    In the meantime, we suggest following the steps provided on these article:


    We'll wait for your response on this matter.
     
    Mayra Aqu, Jun 2, 2023
    #4
Thema:

Unable to activate Windows after clearing CMOS Error 0x803FABC3

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