Pc not loading yet all the pit test were ok... need clean install I t

[Wendy Jackson]

On laptop as pc wont open now...pit ran all tests saying pc ok and doing it's job.... has been happening for a few days now.... the file below was bought to my attention as no description ect of conhost.exe and the others,,, next thing windows start with 3 things on desktop..and pop up says all will be deleted when u log out....yet the pit was going thru all files?

i tried a restore earlier and now windows repair wont help win load ,, im at a loss? anyway for a clean install without disc? and thank you in advance x