I was using the computer a few days ago, full battery, plugged into AC and then all of a sudden it turns off, stops working, fails, dies (you get the point). Pressing the power button yields NO reaction not even a flicker. When plug in the computer the blue "plugged in" light blinks and nothing else works, when unplugged there is nothing.
Again, the laptop stopped working while on full battery, while plugged in and now, whatever i try nothing happens.
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The problem is probably not in the motherboard itself, but may be internal to the laptop. From what you've described the problem is either in the AC Adapter itself or in the power supply inside the laptop (the area where you plug the AC adapter into the computer. The first thing to try is another AC adapter if you can get a hold of one or purchase one if need be as it's the most likely source of the problem. More than likely it's providing enough power for the system to recognize it's attached and draw power from it, but there is likely a short inside it or the cords keep the power from being constant. If you do not have a full adapter to test with, you can replace the end that plugs into the wall with and universal plug - something you can buy at major retail stores. The adapters take a lot of wear and tear and can be damaged from all the stuff we put them through.
how long have you had your laptop? the toshiba laptop battery can be normal used in 400-500 cycles, that means normal in 2 years. if the age is over 2 years, the battery declines day by day. get a new one if it is unnormal
Just to humor me, are you using any peripherals with your laptop when this happens, such as a wireless mouse, USB connections such as digital cameras? Try to take these away when recharging.
There seems to be 2 issues here. 1) Recharing batteries: To prepare the batteries for long-term use (I do not know how long you've had the batteries...try draining the batteries (both of them), and then recharging it to full 2x before using them without the AC Adapter. This should clear the problem.
2) AC Adapter only works every other day: When you swapped the power pack, was it with a new AC adapter, or another used one? Also, have you tried using a different outlet than the one you normally use? Let me know how this turns out.
The battery needs to be taken out once in a while. It is possible to use the ac adapter and power cord without the battery to power your laptop. Please press on the power button for 10 seconds for your computer to turn on. Check if you can see any message on the screen.
remove the primary battery and plug the computer into an AC outlet using the AC adapter. If the computer starts up, one of the batteries need to be replaced. If the battery light on the of the comoputer is blinking, the battery has reached a low batery level, which may not allow the computer to start up. Plug the computer into an AC outlet using the AC adapter to start the computer and allow the battery to charge.