Why doesn't my proximity sensor work?After screen replacement everything works fine except the proximity sensor. The proximity sensor sends out some kind of red "
Answer to: LCD screen problem and question markTo fix the question mark replace the hard drive. If that doesn't work it is probably the SATA cable which is connected to the hard drive that's the problem. Had the same problem myself. Couldn't figure out what the problem was untill I actually tried to replace the cable.