I have this disgusting problem with my Acer Aspire 5315. It can't turn on when on AC cord, it doesn't show any lights nothing. No Fan sound no led lights nothing. When i unplug the coord it starts up on battery but unfortunatly my battery is drained out, the display is black and only the left led lamp is shining green (power led). No nothing, just fan noise. As soon as i plug the coord in it turns of. Since i can't turn on using the coord i can't reset the bios (start the recoveri [fn] + [esc]). I tried the 30 sec tricks but it doesn't work. Anyone knows what I should do to fix this. I started disassembling the laptop but i'm not willing to do this completely since i think the AC jack works ok. Anyone has any suggestions ?