Text: that means it is not necessary to install an additional light switch.

Correct capitalization: That means it is not necessary to install an additional light switch.

Text: private accommodation, apartments (near medveja)

Correct capitalization: Private accommodation, apartments (near Medveja)

Text: in 1830, at the age of 45, dupin married rosalie anne joubert.

Correct capitalization: In 1830, at the age of 45, Dupin married Rosalie Anne Joubert.

Text: now you: are you using sleep mode or other power saving modes on your pc?

Correct capitalization:
Now You: Are you using sleep mode or other power saving modes on your PC?