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how to unlock bios to my note book

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HP Compaq nx6120
Microsoft Windows XP

when i power on my note book the a dialoge box is show that power on password...it is need a bios password..but when i ennter  key,P_20170327_111449.jpg the key is not working cause key has been lock only enter key is working,,so ,now how to unlock bios password  and working on my note book compaq nx6120,,,,,,,,pls help...........

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@sanjib2

 

Remove the RTC/CMOS and let it sit for a few minutes.

 

HP Compaq nx6120 Notebook PC - FRU Remove/Replace Videos

 

https://h20574.www2.hp.com/results.htm?SID=457951&MEID=99CBDA18-840F-4B60-9BBD-B1574F91BA9D

 

Click on Real-Time Clock Battery.

 

REO

If you need further assistance please start a new post as I no longer will be a part of the HP Support Community.
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only battery should be open or plug willbe unplaged?

 

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@sanjib2

 

Remove AC and main battery before taking laptop apart and removing the RTC/BIOS battery.

 

REO

If you need further assistance please start a new post as I no longer will be a part of the HP Support Community.
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rtc/bios battery sholud be change or not?

 

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@sanjib2

 

No need to change it.

 

Just remove it and let it set awhile.

 

Then install the battery and see if that removed the password.

 

REO

If you need further assistance please start a new post as I no longer will be a part of the HP Support Community.
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problem is still now...

nothing to change .........pls tell me what should i do?

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@sanjib2

 

So you removed the main battery and the RTC/BIOS battery and no change???

 

REO

If you need further assistance please start a new post as I no longer will be a part of the HP Support Community.
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nohing to solve anything....

the dialogue  bok still show

....

so what i do?

 

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