Question about Compaq Evo Notebook N400c

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I have a compaq evo n400c needs a power on password key

I do not know the power on password any ideas how i can get into the computer??? no1 can remember it!!!

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  • Anonymous Jan 02, 2009

    power on password required

  • b_balli Feb 12, 2009

    hi please help me



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Remove the keyboard and the battery and power pack lift the keyboard and you will see a small black plug with red and black wires on it unplug it for about 5 min replace the power lead switch on press f10 restart bios all done

Posted on Nov 14, 2009

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If you forgot your password then you have to take your laptop to hp service centre. Because the laptop need to be disassembled before one can reset the poweron password.

Posted on Nov 24, 2008

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Hi please help me
Model No.evo n400c
power on password required

Posted on Mar 05, 2010

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I canot clear setup password cmos on laptop compaq evo n400c


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I cannot log in on my Compaq Evo N400c, I was very


Did you check whether the Caps Lock and the Keypad key is released? If the keypad key is enabled by using maybe the Fn key and one of the F key, some of your keys on your keyboard will be defined as to enter the little alternative characters on them. When it is enabled, you may be able to see a little light on your keyboard under an icon look like a keypad. Sometimes some keys may get stuck or not working so your password is changed when it is typed in. So you can clear the bottom of the keyboard a little bit by maybe put it up side down and maybe shake it a little bit (when turned off) or press those keys down and feel whether it is touching the bottom. When you press one key down you can observe the keys around and see whether something is stucked beneath them. You can use a little air blower or something like a toothpicker to clear stuff under the keys. If you can connect another keyboard to your laptop, you can try that too.
I heard about some program may change the key code of the keyboard so you actually may need to use other keys to enter that character. I hope that is not the case.
If nothing found with the keyboard, you can try to log in with the administrator's account which was created when you install your Windows 2000 and reset the password of the user account you are using. Steps are described in the following document.
http://support.microsoft.com/kb/258289

You may also boot with your recovery CD and see whether you can get through the login stuff or reinstall the Operating System. As long as you don't repartition or format your data partition your data should be there still.

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I have a compaq evo n400c pc and when i switch it on it always asks for the power-on password which i do not have because i have forgotten it. how can i restart the pc and create a new password so i can...


Try booting up into safe mode and changing the account's password or deleting the account. If it is a BIOS password, then you will have to contact the manufacturer.

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Did you charge it for up to 8 hours?

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.

If 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.

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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.

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