When your Toshiba Tecra laptop is not plugged in, it still receives power from the RTC (Real Time Clock), which is also called the CMOS or BIOS battery. If the RTC battery dies, your Tecra will no longer save important settings like the system time and the boot-up procedure. You can change the RTC battery yourself but you first need to remove a series of other hardware components that block direct access to the battery. Tips Warnings Writer Bio
