in facts i have been using this pc for over 4years now but no problems suddenly one day VLC, windows Media player and others similar apps no longer able to read a video withouth Scatching. windows media dont even read at all Vlc the sound comes out but no videos. When it even attempts to plays the picture is backward. i have been reading answers on forum for over 10days try every tip available but yet still disturb. i even tried to install windows 7 then back to W10 yet still same please help me am Desperately in quess of a solution.