Q: Yesterday my colleague somehow pressed a key of my laptop, then my screen displayed upside down 180 degree. What should I do to restore to normal display?
A: This is the image reversion function of graphic card driver, many laptops of different brands have this function.. Tips: it could restore to normal display by resetting on the “Display settings” form. This function of screen reversion could switch by hotkey, such as pressing [Ctrl]+[Alt]+[ ↓] combination could reverse the screen 180 degree upside down. Then back to normal, just press [Ctrl]+[Alt]+[ ↑] combination or cancel this function on the form of “ Graphic card driver adjustment”. Then it’s done.