Guide by the manufacturer on how to use the tool. Includes step by step video guide. Relevant part of the video guide starts at 1m20s: https://www.dell.com/support/kbdoc/en-us/000177401

Short instructions:

• From F12 to the Boot menu
• Select SupportAssist OS Recovery on the right
• Connect to the network (WiFi SSID / password)
  • It does not allow connection with username/password authentication - e.g. eduroam.
• Select Start Recovery → the tool downloads the files
• It may immediately show the error App failed
  • on a new attempt it usually lets you proceed
• Select Approve to continue
  
  

• Select Reset in the lower right → Start reset
• If the WiFi connection has dropped: Set Up Network → Reconnect → Next
• The window shows the OS information → Select Next

This may require that the computer originally came with Windows 11.



Dell tehdasimagen palautus SupportAssist OS Recovery -työkalulla