Hi, one day I upgraded my Dell Vostro 360 to Windows 10 and I was having no problems for more than a month but one day on 10th March around 12 'o' clock I switched it on and it was working fine but after 1 to 1½ hours when I switched it on again it suddenly started to show thin rainbow vertical stripes right from the dell logo screen from down the bottom and a black coloured stain also appeared on it on the left hand side. When I restarted it the screen started flashing white in each 1-2 seconds. Does anyone know how to fix it? I can't try anything because of the constant white flashing. Please help....