Toshiba satellite a40-s270 won't turn on

Disconnect the adaptor and remove the battery from your notebook. Then connect the power adaptor and see if it boots up. If it powers up OK now you may have a bad battery. If the notebook still will not power up, the adaptor may not be compatible or there may be a different hardware problem.

PROBLEM ON NETWORK CONTROLLER

Try removing the battery out of the motherboard. This will be a small watch battery, not the main laptop battery. If this doesnt work, try grabbing the motherboard manual, there could also be a jumper you need to connect to reset.

a problem with the battery or a charger.

Boot from DVD with recovery disk in the drive. Select Restore and follow the prompts.

RAM modules must be installed in special locations on the motherboard called Sockets. These memory sockets are what hold the RAM module in place and can range from 1 to 16 or more. Banks consist of a group of 1 or more sockets. A system can have 1 or more of these banks of sockets. If a system has more than 1 socket in a bank, a Kit must be purchased for that bank. A kit is simply more than one, usually 2 or 4, like RAM modules. All sockets in a bank must be filled. Typically you will see 2x512MB or 2x256MB signifying you get 2 units of 512MB RAM modules or 2 units of 256MB RAM modules, respectively.
The Toshiba Satellite A40-S270 has 2 bank(s) which have 1 socket(s) in each bank for a total of 2 memory socket(s). This means the Satellite A40-S270 can support up to 2 individual RAM modules.
Below is a visual representation of the memory bank(s) and socket(s) configuration for the Toshiba Satellite A40-S270.
This graphical representation above details what the memory configuration would look like with the maximum memory installed and does not necessarily model your system memory configuration. This graphical representation is not drawn to scale and should only be used as a general reference. Please consult your system’s user manual for your actual memory configuration.

Flip it over and loosen 2 screws holding a panel in the center of the laptop.
Once door is removed, it will expose ram modules.
pry locking tabs out, and module will spring UP. remove, and replace reverse of removal.

Isolate the issue first. If your using an external keyboard, remove it and test if you still experience it. If not, then there could be a stuck key on your external keyboard.
If yes, then there could be a stuck key on the laptops keyboard.

If there is a stuck key, try to check the buttons on the KB then contact Toshiba to avail of your warranty for the repair.

Hope this helps.

www.toshiba.com is a good place to start..

enter model number and operating system.

check your warranty here for FREE

you are using the wrong charger which is damging the battery or the battery is fulty