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How to reset HP Laptop CMOS password?

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bbq

Member
Joined
Mar 5, 2005
Hello folks,
How do i reset HP NC serires CMOS password?
mine is NC6400 i need to reset the BIOS password

Thank you
 
thegreek said:
did you forget? is the laptop yours?
My company laptop. i need to clear CMOS pw for my user
I opened the case but i didn't see any jumper. i tried to take the Cmos battery out for few mins but i didn't clear the password
 
1) Turn off computer
2) Disconnect AC adapter
3) Remove battery pack, and remove the laptops keyboard
4) Disconnect RTC (Real Time Clock) battery (located underneath the keyboard, the red/white wire)
5) Leave off for five minutes
5a) I reconnected the AC adapter and powered on the laptop at this stage (before RTC battery was re-connected) This wipes the CMOS memory.
5b) Turn off computer.
6) Reconnect the RTC battery and reassemble the laptop
7) Reconnect AC adapter (DO NOT REINSERT ANY BATTERIES AT THIS TIME!)
8) Turn on the computer and enter the BIOS by pressing F10
9) Set the new BIOS password (if required) and save all settings.
10) Turn off the laptop and reinsert the battery
 
1) Turn off computer
2) Disconnect AC adapter
3) Remove battery pack, and remove the laptops keyboard
4) Disconnect RTC (Real Time Clock) battery (located underneath the keyboard, the red/white wire)
5) Leave off for five minutes
5a) I reconnected the AC adapter and powered on the laptop at this stage (before RTC battery was re-connected) This wipes the CMOS memory.
5b) Turn off computer.
6) Reconnect the RTC battery and reassemble the laptop
7) Reconnect AC adapter (DO NOT REINSERT ANY BATTERIES AT THIS TIME!)
8) Turn on the computer and enter the BIOS by pressing F10
9) Set the new BIOS password (if required) and save all settings.
10) Turn off the laptop and reinsert the battery


can I use it on my Dell laptop?
I use this method to reset my BIOS passowrd but I don't know how to use it.
http://www.iseepassword.com/how-to-reset-hp-laptop-password.html

please help!
 
Last edited:
1) Turn off computer
2) Disconnect AC adapter
3) Remove battery pack, and remove the laptops keyboard
4) Disconnect RTC (Real Time Clock) battery (located underneath the keyboard, the red/white wire)
5) Leave off for five minutes
5a) I reconnected the AC adapter and powered on the laptop at this stage (before RTC battery was re-connected) This wipes the CMOS memory.
5b) Turn off computer.
6) Reconnect the RTC battery and reassemble the laptop
7) Reconnect AC adapter (DO NOT REINSERT ANY BATTERIES AT THIS TIME!)
8) Turn on the computer and enter the BIOS by pressing F10
9) Set the new BIOS password (if required) and save all settings.
10) Turn off the laptop and reinsert the battery


can I use it on my Dell laptop?
 
It is my understanding that this can be an impossible task on all but older laptops short of replacing the CMOS chip itself or whatever chips stores that info. It really depends on the age of the laptop.

I'm interested to see how this pans out as it is challenge that all techs face sooner or later.
 
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