Question about Compaq tc4400 Tablet PC

1 Answer

BIOS RESET I can use my tc4400 for everything but cant remember my bios password. I cant lock it anymore. i had set to allow me to use everything but now i need to change the bios configurations.

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 4 Answers

There is hack software out there for cracking the BIOS password and resetting, don't take me wrong, I don't get into hacking but where I work at a Uni its a useful tool if used legally

Posted on Jan 09, 2008

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

I have forgotten BIOS password, how to remove it ?

this is not possible unless it is one of two models. the first model you can take out the internal clock battery and reset the cmos. the other wont work at all and would need a new bios chip installed but this is only at the factory and a pain. good luck on either.

Aug 31, 2011 | Compaq tc4400 Tablet PC

1 Answer

Forgot the bios password on tablet pc

You can use Kill CMOS from Hiren's Boot CD to wipe the BIOS. Read here what are your options:

Feb 09, 2011 | Compaq tc4400 Tablet PC

1 Answer

I have HP TC4400 Laptop and there is BIOS password which is forgoted please help me how can i remove that password.

To reset the BIOS password read the information from this link.

In case of your HP TC4400 laptop the easiest method would be using software from Hiren's Boot CD as it's pretty hard to open it up and reach for the CMOS battery or the jumper.

Oct 16, 2010 | Compaq tc4400 Tablet PC

2 Answers

I have a HP/Compaq TC4400 tablet pc. I recently had to replace the motherboard and now have a problem with booting. I get the following message: The following configuration change was requested to this...

there are two way either you set the password in system bios or reformat the hard drive and reinstall the operating system . it will fix all the seeting to new motherboard.

Nov 21, 2009 | Compaq tc4400 Tablet PC

1 Answer

How can remore the bios password on the hp compaq 6735s

Remove power supply remove battery and remove bios battery. Then pray!

Nov 12, 2009 | Compaq tc4400 Tablet PC

1 Answer

What is the hack for resetting bios password?
check the website

Sep 12, 2008 | Compaq tc4400 Tablet PC

1 Answer

Hack for reset bios tc4400
plz check the website

May 11, 2008 | Compaq tc4400 Tablet PC

1 Answer


It's not looking good. Your kids had to type it twice to be able to set one. If you can't get them to remember it you might have some work cut out for you.

Read the information on the site I provided above. Sometimes you luck out and it's a simple jumper setting to clear a BIOS password. Sometimes you are looking at onboard memory that stores the password. From what I have read about it so far by googling it.

The RTC battery is on the underside of the system board, and you will need to totally disassemble the laptop to get at it.

They talk of a video guide from HP showing you the steps to do this, but I was unable to find it as it has likely been removed.
Click on the -->Real Time Clock Battery<-- 3rd from the bottom of the left side column.
Use the link below to get some online chat help from HP.

Good luck...hopefully this helped out some.

Dec 12, 2007 | Compaq tc4400 Tablet PC

Not finding what you are looking for?
Compaq tc4400 Tablet PC Logo

707 people viewed this question

Ask a Question

Usually answered in minutes!

Top Compaq Tablets & eReaders Experts

Richard Finch

Level 3 Expert

397 Answers


Level 3 Expert

5660 Answers

Chris Hunt

Level 3 Expert

1342 Answers

Are you a Compaq Tablet and eReader Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides