my laptop which is an acer aspire 5742 won't turn on. when i first noticed that the power light was blinking and not turning on, i did a solution which i've found on this site which is to take out the charger, then battery, and hold down power button for 20 seconds, insert battery, then charger and make sure charger is plugged into main power supply. i've done this and it has worked several times previously but this time when i tried it nothing turned on. i've even took everything out for 2 days, put it back together and tried once more again nothing. i need someones help please, i'm a student and i need my laptop for my course and i can't afford to go have it fixed somewhere else.