Hi,
Your concern about the performance of your device can be due to the changes in its configuration, broken/corrupted system files, and/or hardware related issues. Based on the details that you've shared, we'd like to know the following:
- If you're able to boot your device up to the log on screen.
- If you've received error codes during Windows Update and/or while restarting your device.
- If you've made changes in the settings of your device prior to downloading/installing the Windows Update.
Using an ISO file can restore/recover your computer. You can refer to the Use installation media to restore or reset your PC section of this link to guide you through the process. We've also created a video to serve as your visual reference in creating the ISO file.
We look forward to your response.