Forgot BIOS password

Posted on 2008-10-13
Last Modified: 2013-11-17
I have a Compaq Presario 2200 with a BIOS password that is forgotten. I think I have to remove the CMOS battery but I can't find it. Can anybody tell me if there is any other way to reset the password, or where the cmos battery is located? I have already contacted pwcrack and they didn't have a solution for this particular model.
Question by:EFlint1
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions

Expert Comment

ID: 22706723
Hi there here is the manual for the laptop i think this is the correct one without specifics from your self :
section 5.15
LVL 12

Expert Comment

ID: 22706726
yeah that model dosent have the std coin style battery it has a maxcell lion battery which is non replaceable..

umm you can always take the main battery out then using a small wire short the maxcell battery out which will wipe the bios settings...

there is no bios reset jumper on those machines that i can find..

Author Comment

ID: 22706935
Can yo tell me where the maxcell lion battery is located?
Business Impact of IT Communications

What are the business impacts of how well businesses communicate during an IT incident? Targeting, speed, and transparency all matter. Find out more in this infographic.


Author Comment

ID: 22706972
Is it difficult to short this battery out?
LVL 32

Expert Comment

ID: 22707118
This model has a security chip which isn't effected by removing the CMOS battery, but if you want to try , here is the video guide for this laptop. It will require a full disassembly of the laptop and removal of the motherboard, as the battery is on the bottom side of the motherboard. Shorting the battery will not work either and may harm the motherboard.
Just click on the "Real Time clock Battery" link on the left side of the page.

Author Comment

ID: 22707151
If shorting the battery won't work, is there a solution? Is there a master password or anything like that?
LVL 32

Accepted Solution

Mark earned 500 total points
ID: 22707272
No, this is the job of the security chip, which is meant to keep those other than the valid owner(who should know the password) out of the laptop. Security on newer laptops is very tough to bypass if it can be done at all.
Usually this requires a replacement of the motherboard as the security chip is soldered on the board.
Look at it this way, if the security was crappy and anyone could bypass it, then it would serve no use. Being portable laptops are prone to being stolen, so tough security is needed.

Author Comment

ID: 22707349
Wow. My customer is not going to want to hear this. Thanks for the help.
LVL 32

Expert Comment

ID: 22710627
Well at least it isn't a hard drive password, that would render his data inaccessible.
If he needs data recovered, you can pull the hard drive and use a USB hard drive enclosure to access the files.

Featured Post

[Webinar] Code, Load, and Grow

Managing multiple websites, servers, applications, and security on a daily basis? Join us for a webinar on May 25th to learn how to simplify administration and management of virtual hosts for IT admins, create a secure environment, and deploy code more effectively and frequently.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
laptop chooses an action when pointer touches it without clicking 9 82
Google drive question 2 33
Advice on USB Type-C port to USB standard port 8 54
Replace Hard Disk 7 106
Introduction For the past 15 years, mobility has been a top priority for employers, employees, students and all kind of people. Having more and more in your portable phone or "smartphone" is a priority and being able to work while on a plane, bus o…
Sometimes a user will call me frantically, explaining that something has gone wrong and they have tried everything (read - they have messed it up more and now need someone to clean up) and it still does no good, can I help them?!  Usually the standa…
I've attached the XLSM Excel spreadsheet I used in the video and also text files containing the macros used below.…
Finding and deleting duplicate (picture) files can be a time consuming task. My wife and I, our three kids and their families all share one dilemma: Managing our pictures. Between desktops, laptops, phones, tablets, and cameras; over the last decade…
Suggested Courses

752 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question