No power from battery or power cable

When you run on the battery the laptop reduces or stops certain things to conserve battery power. Haven't you ever noticed that once you remove the power cord the screen goes dimmer. The laptop is conserving energy and that will cause it to perform at a slower pace or speed.

Unplugged laptops generally go into power saving mode. They will slow the CPU speed, stop the hard drive more often and lower the brightness of the screen (big power savings) all that good effort is lost when you remember that the power supply you use to charge the battery is making more heat . When you reattach it to the power adapter it goes back to Full Power Mode, and recharges the battery as well.

Here's a rule of thumb that I always follow. If i'm near an electrical outlet, I use the power cord. I never use my battery unless there is no electrical outlet near by. This way my battery is always charged for times that I really need to use it.

Hello,

Try with the battery not connected to the laptop. If no good, then try with another power adapter. If still no good, then take it in to a reputable service shop.

Hope this helps!

Joe

unplug the power cable from the laptop
remove the battery then press the power button for 5-10 secs
plug in the power cable to your laptop WITHOUT the BATTERY

try to turn on your computer if still doesnt work try a known good A/C adapter if still doesnt work then mobo needs to be replace

If you are trying to boot up on battery, with no power cable, the battery is dead. If you are trying to boot up on power cable then your cable might not be good. Also your motherboard might be shorting out as this problem is not usual. First thing check the voltage coming out of your power cable to see if that is the problem, then go with opening and fixing the laptop inside. Good luck

Hi,
Yes, it should run off AC power even if the battery is removed. Sounds like either the motherboard or your AC adaptor might be failing. I would start by trying the AC adaptor with another dell to verify it it's not dead.

Good luck,
Raf

hello, while laptop was being charged was it powered off?? or hibernation mode?
TRY THIS:- Disconnect power cable from the laptop, then remove the battery from the laptop with power unplugged and battery out open up laptop and hold the power button down for about 15 second and then let it go. Plug the battery and power cable back and try turning it on...

let me know if that works or need further trouble-shooting

good luck,

Amar Sondhi

Its not the battery, its AC power source providing your problem.
Check if AC connector goes in as far as it should on your laptop, check so you dont have a weak link on the cables on the AC. My guess is that the power sorce or the cables on is defect someway.

Good luck!

Hi Dhadha, 
Try this: - remove AC adapter plug - remove the battery - insert the battery again. - try power up the laptop.
I have same problem, but this trick always work, and I always do this every power up. :)
However, I am using a usb optical mouse for an indicator. When inserting the battery, I check the light on the mouse. If it is flashing the second I insert the battery, then the power up will be successful. IF it is not, then remove and insert the battery again.
Try it.
Regards,
Dapid Candra

This problem usually occurs if your laptop undergoes any shock or it falls.
The processor of the laptop hangs and needs to b reprogramed by experts in service center.

Same problem happened to my Toshiba A100

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