Today we checked the toshiba Satellite u920t laptop manual and we copied some information from there, focusing on laptop battery. We believe it would be satisfied to you.
Battery doesn't power the computer
The battery may be discharged - connect the
TOSHIBA AC adapter to recharge the battery.
Battery doesn't charge when the AC adapter is attached
If the battery is completely discharged, it will not begin charging immediately, in these instances you should wait a few minutes before trying again. If the battery still does not charge, you should check that the power outlet the AC adapter is connected to its supplying power - this can be tested by plugging another appliance into it.
Battery doesn't power the computer as long as expected
If you frequently recharge a partially charged battery, the
TOSHIBA battery might not charge to its full potential - in these instances you should fully discharge the battery and then attempt to charge it again.
Check the Power saver option under Select a power plan in the Power Options.
The BIOS setting and system date/time are lost.
The charge in the Real Time Clock (RTC) battery has run out - you will need to set the date and time in the BIOS setup application by using the following steps:
Please refer to your software's documentation to ensure that it is not remapping the keyboard in anyway (remapping involves changing or reassigning the function of each key).If you are still unable to use the keyboard, you should contact TOSHIBA Support.section, for further information. Procedure Press the function keys to adjust the display priority, and to make sure it is not set for output to an external monitor.Press and hold the F2 key, and then turn on the computer. Release the F2 key one second after the computer is power on - the BIOS setup utility will load.
Set the date in the System Date field.
Set the time in the System Time field.
Press F10 - a confirmation message will bedisplayed.
Press the Y key - the BIOS setup application will end and the computer will restart
