An incompatible video signal has been received

what the problem is your pc is displaying a resolution you monitor cant display most likely its to low do you have a 2nd monitor you can hook up to set resolution Once you have done that set resolution that your new monitor can take and then hook up . when i moved from a 19inch monitor which ran at 1280 x1024 to a 32 inch samsung 1360x768 i had same problem as my screen cant display that res so set to what ya monitor can do .If you dont have a second display keep connected turn pc off with only your sharp cable in and it should turn on once into windows