Home Forums Windows Help Grey shadow top right monitor Tech Helproom | Windows Help | Apple Help | Digital Home & Smartphones Help | Consumer Rights Advice | Games | Speakers Corner | Beta Testing Forum Rules | Contact Forum Editor | Report a Post Grey shadow top right monitor jonathanj 09:45 22 Jan 2018 Locked A grey shadow has started to appear in the top-right corner of monitor. It usually appears after I have been logged on for a while. I have a Dell desktop which is less than 12 months old. what can be causing this? Forum Editor 15:07 22 Jan 2018 There could be all kinds of causes, but in view of the age of your monitor (I assume you bought it with the computer) you should contact Dell immediately and ask for a warranty repair or replacement. This thread is now locked and can not be replied to.