We help IT Professionals succeed at work.

We've partnered with Certified Experts, Carl Webster and Richard Faulkner, to bring you two Citrix podcasts. Learn about 2020 trends and get answers to your biggest Citrix questions!Listen Now


How to remove or get by a cmos password on a sony laptop

Rcorn8559 asked
Medium Priority
Last Modified: 2012-05-06
I am working on a Sony laptop and found out it has a cmos password and no ones knows what it is. How can I get around the password. I'm not sure of the o.s. because I haven't been able to boot it up.
Watch Question

you can't...there are ways to temporarily short the chip with two wires(which can damage computer), but usually the chip has to be replaced ( not the processor, just a chip that holds cmos for better security).  Otherwise, call Sony and see if they will help you but you will have to supply...

Not the solution you were looking for? Getting a personalized solution is easy.

Ask the Experts
proof of ownership
Rob HutchinsonTech Lead, Desktop Support

Ask the owner of the laptop?

If they do not know it, then you will have to take it apart and find the clear CMOS jumper or remove the motherboard battery.

laptops don't have jumpers like desktops...links where i was involved with solution so you can better understand bios/cmos pass..I have more coming
Rob HutchinsonTech Lead, Desktop Support

Some laptops do have jumpers, I have seen them, but they will not look like your normal motherboard jumper. They are usually two solder points that have to be shorted out...but then maybe I'm remembering too far back and they no longer make them that way.
Rob HutchinsonTech Lead, Desktop Support

Did some research and it appears that some laptops can have their CMOS cleared now by removing the laptop battery, and then the "backup" battery which is usually difficult to get to.

From an IBM laptop service manual:(Guessing Dell's are not that much different...don't have a Dell service manual)
1. Turn off the computer.
2. Remove the battery pack.
3. Remove the backup battery.
4. Turn on the computer and wait until the POST ends. After the POST ends, the password prompt does not appear. The POP has been removed.
5. Reinstall the backup battery and the battery pack.

WireDnet, oh...you mean shorting the board...see my original post as I did point this out as an option, but with the expense of maybe damaging the board...even most techs avoid doing this for fear of damaging the motherboard...the would rather the tedious task of removing chip and soldering (the tedious part since paths on laptop take really precise soldering) a new one on.
Access more of Experts Exchange with a free account
Thanks for using Experts Exchange.

Create a free account to continue.

Limited access with a free account allows you to:

  • View three pieces of content (articles, solutions, posts, and videos)
  • Ask the experts questions (counted toward content limit)
  • Customize your dashboard and profile

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.


Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.