Lately I've been having trouble with my Inspiron i7567 laptop. At first, the screen would freeze during boot up on the Dell logo screen. It has now evolved to a complete failure in which the screen turns to a light blue with purple and green pinstripes. This happens almost every time I boot it and anytime I close the laptop or wake it from sleep mode. Any ideas what's going on? Or possible solutions? Thanks.
Start with the display diagnostic (hold D through powerup). You should see a series of alternating screens -- without that fault you've described. Do you, or does the fault show in the LCD test?