So, recently I added a M.2 to my Dell Prebuilt. Ever since, it has said Windows 10 needs to be activated. Strangely though, even when I use the troubleshooting it still points me towards buying a "authentic key" even though before this it was authentic. I contacted Microsoft but they said to contact dell to find my original product key. My warranty is expired however so I was wondering if Dell will charge me to get this fixed and/or is there a easier way to fix this.