I have an Acer Aspire V5-122 and earlier I updated its video card driver. As I remember the new driver was called AMD Crimson update 16.3.2 and was the suitable driver update for my laptop. When it was done installing it said that it needed to restart and when it did. It never opened. The power indicator is on but the screen is completely black. I tried force shutting down and turning it on again but it didnt work. I need help please