Then shut-down the machine and insert the battery (should be very careful in both removing and inserting the battery), then power on the machine this time if you decide to go to BIOS setup.
Open the computer and try to locate where the CMOS Battery is (it looks like a very big watch battery), remove battery and then switch or power-on the machine without the battery. Wait for at least 30 minutes, then put the battery back in. Remove the battery for some minutes (lets say 5 minutes) to drain out the power in the machine then power-on the machine but connect it to a source of power, don't insert the battery.If it doesn't work try this one out, I am very optimist it will because I have tried it myself. Gently pry the battery out of its holder with your screwdriver, and disconnect the cable.
Follow the four steps listed there, in order. internal battery that provides power to the system clock even when the computer is unplugged, so the battery safety information applies to all computer products. Scroll down to section ‘1120 Backup Battery’ (p.
HOW TO CHANGE CMOS BATTERY ON A LENOVO G560 LAPTOP MANUAL
Download the ThinkPad T520 Hardware Maintenance Manual (or, if you have a different laptop model, download the corresponding manual here). Open you computer and try to locate where the BIOS Jumper is located, then remove it boot the machine without the jumper and the shut-it down, insert the jumper and boot again you will be able to access you BIOS setting without it requesting a password. The CMOS battery (also called backup battery) is malfunctioning. You must be conversant with hardware to do this.i have two option of which I have tried one. You can try this, I did it and it worked.
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