Just purchased a compaq n400c can u tell me how i change the power up password as i dont have a manual , i do know the current password , just want to change it , thanks
i removed the battery on mine, i have a compaq presario nc6220, and i cannot bypass, even when i press f8, it wont let me in, what do i do????
Yes, as soon as i turn on my laptop, it locks up and it wont let me make any changes,?i cant even get in to change the bios , ive took the battery out and its still locked??how do i change the bios password, is their any other way,,,
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may need to consult the Maintenance & Service Guide for your N400C
to find and remove the RTC battery. You can access that and all the
documentation for your notebook here: http://tinyurl.com/mda9a
is the procedure to clear the Set-up (BIOS) passwords: (1) turn off
the computer. (2) If it was in a docking bay, remove it. (3)
Disconnect A/C Adapter. (4) Remove main battery pack (and the
secondary battery if one is fitted. (5) Disconnect the Real Time
Clock (RTC) battery from the system board. (You'll need to remove the
palm rest and keyboard to do this - there are clear instructions and
pictures in the Mtce & Svce guide referenced above. You should see a
tiny white plug on the end of the RTC coin cell leads. Disconnect it -
you do not need to remove the RTC battery.) (6) Now wait 30 minutes.
(The 5 minutes quoted by HP in some of its manuals is not enough) (7)
Press and hold down the laptop power button for 1 minute. (This is
intended to clear any stray voltages or static that's still around) (8)
Reconnect Real Time Clock battery and re-assemble laptop. (BUT DO NOT
re-fit the main battery yet.) (9) Hook up the A/C adapter and turn
on the laptop. System should boot up OK - press F1 or F10 while on
Compaq splash screen (ie before windows starts to load) to access BIOS. (10)
All passwords should now be cleared. Check you can enter BIOS OK. It
should be restored to Compaq default settings with no power-on or admin
passwords. (11) Now you can re-insert the main battery (and secondary
battery if you have one) (12) Now reset date, time and other BIOS
settings as you want them to be. (13) If you set any passwords -
make sure you keep a note of them somewhere safe but outside the laptop
If you know the current password, enter it, and then click "change password".
If you do not know the current password, you could be a thief, in possession of a stolen computer. Find the original sales-receipt, and telephone COMPAQ. Once they identify you as the owner, they can tell you how to delete the password.
Caring for your Compaq Evo N400c Laptop Battery
You can improve the life of your Compaq Evo N400c Laptop Battery by doing the following: When
you first receive your laptop battery charge it fully for at least 6-8
hours and then discharge the battery fully by using your laptop
unplugged from the mains until it runs down completely.
Repeat this 3 times to ensure your Compaq Evo N400c Laptop Battery will give you the maximum performance.
you regularly use your Compaq Evo N400c Laptop on mains power for
extended periods, removing the battery from your Laptop during these
periods will extend the usable life of your laptop battery.
the windows log on password can be deleted by:-
press F8 on start up and enter safe mode and highlight start windows in safe mode, and log in windows using administrator account and go to user accounts and profiles and in the other log on account delete the password and restart windows.
If you mean the bios password only removing the cmos disc shaped battery on the motherboard for 5 minutes or so can delete the password.