Have read plenty of posts but haven't really found a solution. When I push the power button on my 2013 macbook air (unplugged) (recently let the battery died completely) the battery sign comes on to charge the computer. (Recently figured this out today) Once it's plugged in the computer chimes but the screen stays completely black. When I press the caps lock button the green light doesn't come on either and the keyboard doesn't light up. Already tried the resets and they didn't work. Any solutions or ideas?