Friend, I understand how frustrating it is; a failure during an update is always a gamble. To avoid the hassle of support, use kms pico. It’s a proven way to quickly restore activation. It simply restarts the license status, removes the watermark, and reopens all settings. It’s much easier than looking for some strange keys or reinstalling a clean version of Windows. It only takes a minute, and your computer will look and work like it did before the update.