Solved! I have a problem with this method with dell inspiron 5520

[Adi_11]

When i select [reset your pc] then [next] then here came written [insert your windows installation or recovery media to continue] what to do now

 

[rgd1101]

insert your windows installation or recovery media

 

[Cos70]

Dells come with a recovery partition on the hard drive usually, which stores a copy of the windows iso to reset from. You just need to browse to that recovery drive and select it when asked.