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Acer 5420 Extensa no power lights on and off

My kids Acer extensa would not power up, front power lights go on for a couple of seconds then go off leaving us with a dead laptop ready for the trash, I followed the tip to disassemble the laptop completly and reasssemble my thinking was why not its dead anyway? so I did and guess what it worked. I think the biggest reason this worked is because of the removal of the battery CMOS caused a hard reset therefore clearing Main board boot logic this allowed for laptop to boot and work again. So far so good its been 10 days. The first tests I made where to check the power supply for voltage with a digital voltmeter and paper clip to probe the center of pin terminal for 19.0 volts dc. My second test I made prior to dissasembly was removal of battery, hold down the power button for 30 seconds for a soft reset. the laptop should power up with the battery taken off the laptop in my case it did not, so I said lets dissasemble, while I was there I removed the battery that retains CMOS memory on the main board and checked for over 3.0 volts that tested ok. I did not see any abnormal wiring or mainboard issues or odors! all visual looked perfect so I proceeded to reasemble and laptop booted. All tips vary by laptop and if problem is software or hardware but this one worked for me so far, thanks for all the great tips out there keep up the good work!

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Dec 21, 2015 | Acer Extensa 5620 Notebook PC

1 Answer

Acer Extensa 5235 wil not power on


The solution to your problem lies in one of the following three areas:

1.) Your charger is faulty and is therefore not able to pass power to your laptops battery.

2.) The charging connector on the laptop has come loose from the contacts. Therefore a bad connection.

3.) Your battery is faulty.

I think possibility 2 is the most likely, although you will have to test possibility 3 by removing the battery and plugging in your charger and seeing if the laptop powers on.If it does power on then that rules out possibility 1 and 2 leaving a faulty battery.

Replacement Acer Extensa 5235 AC Adapter 65Watt 19V 3.42A

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1 Answer

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its power button doe not work please change it as soon as possible

Apr 14, 2009 | Acer Extensa 5420-5687 Notebook

1 Answer

Bios password on acer extensa 4620


ok on all desktops there is a jumper on the motherboard conecting 2 out of three pins and on the motherboard it says psswd. power off and unplug it then remove the door on the back where the ram goes ill bet thats where ull find it. take the jumper off and put it on the other pins. boot it up and password should be dissabled go int bios and make sure. u can leave it like this or turn off and replace the jumper. hope this helps.

P.S. if the jumper isnot by the ram check behind any other doors the laptop might have

Jan 24, 2009 | Acer Extensa 4620 Notebook

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