I have an acer aspire v3-572pg-56cy that I got just over a year ago, and lately it's been taking a very long time to wake up from sleep or turn on. It started by only taking 20 minutes or so and now takes hours. The screen is black and flickers (like it's lit but there is nothing at all on the screen, even a cursor) on and off until it starts. Last night my itunes and google chrome froze and my computer turned itself off, and hasn't turned on since. I'm not very knowledgeable about computers, should I just take it to be professionally diagnosed, or is there anything I can do?