Many people would have to change the battery computer motherboard BIOS yourself.
The most common symptoms BIOS battery runs out
Symptoms of a computer are going to happen when we press the button to start the machine.
it will show a screen, press F1 to enter the date and time in the Bios.The dates and times will be reset to 00:00 on 01/01/2001.
The date and time the ERROR we need to set a new date and with SAVE and EXIT.