Hey I have Aspire 4743 and yesterday when i tried to turn it on nothing happened. The startup screen ( where it says acer and etc ) didnt appear. The screen was black. Only the power LED was on. No other LED even blipped. I searched on google and found the solution that says unplug, remove the battery, hold power button for 30+ seconds, connect power cord, turn on, and shut down, put battery back in. But this didnt work for me. The same problem happens. I quickly need an update. So someone please help.