How to unlock acer laptop bios password

[johnroo]

Hello,
my Acer laptop, Aspire 4520 is infected with virus.To format I can't unlock the bios password nor can i logon using the safemode!!

 

[wribbs]

You're going to need to open the thing up and remove the CMOS battery to reset the BIOS.
This video might help. mute your speakers
ACER ASPIRE 4520 CASING OUT