Skip to content

Konstantinos Tsoukalas

Konstantinos is the founder and administrator of Since 1995 he works and provides IT support as a computer and network expert to individuals and large companies. He is specialized in solving problems related to Windows or other Microsoft products (Windows Server, Office, Microsoft 365, etc.).


  1. shaiby
    January 9, 2024 @ 8:55 pm

    worked perfectly on toshiba sattelite c850


  2. KC
    June 15, 2023 @ 8:02 am

    Using Method 2. Upgrading from 21H2 to 22H2 however mid-way during the upgrade, get this message "Undoing Changes …….." and when back to Windows it display another message "The installation failed in the SAFE_OS phrase with an error during APPLY_IMAGE operation"
    Do you know of any solution for this?
    Thank you.


    • lakonst
      June 15, 2023 @ 9:33 am

      Before upgrade, do the following:
      1. Temporarily uninstall any 3rd party (non-Microsoft) antivirus or security program from your system, before installing the update.
      2. Disconnect any USB connected devices that you don't need. (e.g. USB disks, USB Wireless Mouse or Keyboard Receiver, USB Wireless Network Card, etc.).
      3. Make Sure that you have enough free disk space (at least 32-35GB).
      4. Disable Blocker Encryption, if enabled.


Leave a Reply

Your email address will not be published. Required fields are marked *