I try to clean the cmos passward ; and i do;t know how .
What ever you do, do not use soap and water!!
Really, this is a little tough. There is a jumper someplace close to the cmos battery that will allow you to clear the password. First thing you have to do is find the cmos battery, and it could be under the keyboard, or under a cover on the bottom of the machine.
Looked for a service manual for you, but unable to come up with one.
I believe that's a laptop and there will hardly a jumper pins! if you know a someone who can open (disassamble) the laptop without damaging it, then after disassambling it, locate a button battery and take it out for half a minute, then put it back in, reassemble then power up!
this is a classic way to remove BIOS/CMOS password. However you will need to reset all the BIOS settings yourself.
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