Bios reset

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Joined
Feb 25, 2020
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How long was the battery removed? You might have to wait up to 30 minutes before the password is reset and you can put the battery back in.
 
Joined
Dec 21, 2016
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BIOS passwords are there for a reason and there would be no point in having one if all it took was to remove the CMOS battery to clear it, going by the info in your OP it sounds like you are locked out by a Supervisor password in the BIOS, if this is your MB it would be expected for you to know the password in all honesty.
 

Goddess-Bastet

Virginia
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Apr 26, 2019
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882
You have to shutdown the PC, disconnect the power supply, disconnect all connected USB devices, remove the battery (if a laptop) & then remove the CMOS battery. Long press the on/off button to disperse any residual energy & then leave it for 15-30 minutes. Then reconnect the CMOS battery & power supply then restart. If the password is still there then only the manufacturer of the PC can fix the problem.
 

crjdriver

Moderator
Joined
Jan 2, 2001
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44,484
You have to shutdown the PC, disconnect the power supply, disconnect all connected USB devices, remove the battery (if a laptop) & then remove the CMOS battery. Long press the on/off button to disperse any residual energy & then leave it for 15-30 minutes. Then reconnect the CMOS battery & power supply then restart. If the password is still there then only the manufacturer of the PC can fix the problem.
You could do that on a laptop until the cows come home; never going to work. On a laptop, the pw is stored in non-volatile memory ie it does not need pw. On a desktop, the bios pw is stored in volatile memory so removing pw would work.
 
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