I have an Acer Extensa 5420-5687 laptop that is not powering up. When the laptop is running off the battery and I try to turn it on, the power light and the disk light flash for a few seconds, then it shuts down. When the power cord is plugged in,It does the same thing. Is there anything that can be done without taking it in for service? I've tried taking out the battery and holding the on button to see if that would reset it. It still won't work. It had a lot of dust build up on the cooling fins I'm afraid it has overheated and hurt some parts. HELP!

how to solution acer extensa 4520-5687 for laptop bios password clear how to solution acer extensa 4520-5687 for laptop bios password clear

well there is couple of choice you can do this, one if you know the password of the bios, then of course go into the bios menu and disable it in the security tab by entering the current password and when prompt for a new one, just type in nothing and enter enter, sometime loading the default value will also work. Two, if you don't know the password or forgot, with some laptop you can just take the back panel of the laptop and take out the memories/ram for a few minutes and it will reset the bios to original, if that don't work, you are going to have to dig in deep where you have to take your laptop apart to get to the cmos battery that holds instruction saved in the bios. By doing this you are doing a hard cmos clearing of the bios setting and restoring it to the original setting. In this process you are required to take the laptop completly apart, since in the acer 5420 that i have, the cmos battery is located around the right side palm rest area covered with a sticky paper tape. You will have to take the motherboard out from the laptop and turn it over and you will see a battery that is about silver 1" in diameter. You will have to take it out, and let it sit out for a few minutes and then put back it, This will allow for a hard bios clearing which could clear the bios password. Other then that, I'm not sure what to do, In the last 2 process, make sure laptop battery is not attached or so with the power cords. well there is couple of choice you can do this, one if you know the password of the bios, then of course go into the bios menu and disable it in the security tab by entering the current password and when prompt for a new one, just type in nothing and enter enter, sometime loading the default value will also work. Two, if you don't know the password or forgot, with some laptop you can just take the back panel of the laptop and take out the memories/ram for a few minutes and it will reset the bios to original, if that don't work, you are going to have to dig in deep where you have to take your laptop apart to get to the cmos battery that holds instruction saved in the bios. By doing this you are doing a hard cmos clearing of the bios setting and restoring it to the original setting. In this process you are required to take the laptop completly apart, since in the acer 5420 that i have, the cmos battery is located around the right side palm rest area covered with a sticky paper tape. You will have to take the motherboard out from the laptop and turn it over and you will see a battery that is about silver 1" in diameter. You will have to take it out, and let it sit out for a few minutes and then put back it, This will allow for a hard bios clearing which could clear the bios password. Other then that, I'm not sure what to do, In the last 2 process, make sure laptop battery is not attached or so with the power cords.