Hi, sir i have a dell latitude x300 book but unfortunately cmos is locked with password and i do not remember it. please help me for removing the password. thanks and best regards sohail

Try removing the CMOS battery or if completely discharged try fitting a new one.

I remember seeing some video about this sort of thing on Youtube.

Hi,
to solve you can remove battery from mainboard of Notebook, so you must remove the CMOS battery.
Before:

• Turn the computer off and disconnect the power cord from it.
  Disconnect the battery from the computer.
  

sir
remove CMOS battery then shoting two cmos connection

go to biosremoval.com they can help, works for me every time.
my laptop had bios password hard drive password and windows password. which was unlocked using bios removal services from biosremoval.com

Hi there !

You can remove the BIOS password by removing the CMOS battery located inside your laptop and in the motherboard. Turn off your computer and remove the battery before opening the computer and remove all the screws at the back of your laptop to reveal the motherboard and remove the battery.

I hope it helps you. Good Luck

the best way and most recommended solution is using the website called www.biospro.com they have unique bios and hard drive password
to solve all dell password problems such as:

**** This computer system is protected by a password authentication
xxxxxxx- 595B, xxxxxxx-2A7B, XXXXXXX-D35B



**** System Disabled 12345

*****DELL UNLOCK KEY HINT

*****ACER UNLCK KEY HINT

****DELL XXXXXXXXXX - 1D3B

****DELL XXXXXXXXXX - 1F5A

AGAIN THE WEBSITE IS CALLED WWW.BIOSPRO.COM

After a lot of research and many attempts to unlock my Dell Laptop with bios password, while talking to Dell Support, I finally found this website www.biosunlock.com

You'll need to contact Dell Tech support for a master Password for that system 800-624-9896 (USA) verify you are an authorized user of the system, then they will assist with a master password

please pluck the jumper from *********** board and then start your pc your Password is removed.

The password is not on the battery it is in the volatile memory.

The battery supplies the power to the volatile memory to make sure it retains its settings.

If you have removed the Cmos battery and when you put it back the machine still has a password then the password is written into the non-volatile memory and cannot be re-set that way.

Get a hold of someone with ERD Commander and they will drop the password off in a couple of minutes