Computer wont turn on without charger

nottechsavyteen · Sep 7, 2013

I have an Asus laptop,bought it almost a year ago. for about a month now it wont turn on without being plugged into the charger. Once it turns on its fine and i can unplug it and it will run normal, no problems. anyone have any ideas of what s wrong?

Tradesman1 · Sep 7, 2013

Couple ideas, one would be to pull the battery and clean all the contacts, I prefer simple Isopropyl alcohol and foam swabs (q tips can leave fibers on the contacts as can erasers (which unfortunately many use, used to be favored years ago), same on the laptops contacts...and give it a try....other would be to have it run on the battery alone until it the battery runs out of juice, running a battery complety down then charging can sometinmes rejuvenate it

nottechsavyteen · Sep 8, 2013

Tradesman1 :

Thanks i'll give them a try!

JackNaylorPE · Sep 8, 2013

Thought I answered this already....

Your problem is common when people leave laptops plugged in all the time. Modern batteries actually need to be drained once and a while....it is recommended that you drain the battery once every 30 cycles to recalibrate the charging circuit . Failure to do so reduces battery life and a miscalibrated charging system can also do damage.

NEVER drain the battery to complete 0%.

http://batterycare.net/en/guide.html

Full battery discharges (until laptop power shutdown, 0%) should be avoided, because this stresses the battery a lot and can even damage it. It's recommended to perform partial discharges to capacity levels of 20~30% and frequent charges, instead of performing a full discharging followed by a full charging

Most modern laptops will shut down at about 5-7% which is fine..... people have been known to defeat this protection by restarting the machine to the BIOS (did it myself till I was educated to the contrary) and draining full to 0% .... not a good idea. Best just get it to about 3%

Laptop batteries contain a capacity gauge that allows us to know the exact amount of energy stored. However, due to the charging/discharging cycles, this sensor tends to be inaccurate overtime.

Some laptops include in their BIOS, tools to recalibrate this battery gauge, which is nothing more than a full discharge followed by a full charge.
So to calibrate the gauge, it should be performed, in every 30 discharge cycles, a full discharge non-stop , followed by a also, non-stop, full charge.

An inaccurate gauge can lead to the fact that the the battery capacity values are are wrong. The battery may report that it still has 10% of capacity when in fact it has a much lower value, and this causes the computer to shutdown unexpectedly.

Should you remove the battery when A/C is plugged in?

It depends:

- In a normal usage, if the laptop doesn't get too hot (CPU and Hard Disk around 40ºC to 50ºC) the battery should remain in the laptop socket;

- In an intensive usage which leads to a large amount of heat produced (i.e. Games, temperatures above 60ºC) the battery should be removed from the socket in order to prevent unwanted heating.

The heat, among the fact that it has 100% of charge, is the great enemy of the lithium battery and not the plug, as many might think so.

To help you manage your battery, i strongly suggest that you download Battery Care

http://batterycare.net/en/download.html

It will advise you when your battery needs a discharge ./ recharge cycle. The Guide page is where I took those quotes from. If ya delve into the full manual, or download one from a entusiasts manufacurers web site, you will see these same instructions expressed therein for lithium ion batteries.

texhnologic · Oct 7, 2013

Or if all that doesn't work, try to reset the BIOS. That worked for me once, someone messed around with the settings and all I had to do is to change the BIOS settings to default. Good luck!

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Computer wont turn on without charger

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