Run to the right side, get down and crawl under the windows. If you will get light, you immediately die. Follow below and see other ghosts.
Switch it on by pressing the TAB key. Climb the stairs, and interact key E with an electric shield. Press Enter, to confirm the record. After that, re-press the button to play the recording. When another ghost will turn off the light, then follow right.
Expect a continuation of a text walkthrough. Now youcan see the video walkthrough of the first part.