Clear BIOS Password & CMOS Settings Without Removing Battery

by Rohit Khurana on November 7, 2010


The BIOS (basic input/output system) is a built in PC software and is the first code which your PC run as your turn it on. The basic function of BIOS is to load the operating system and then initialize and identify devices like video card LAN card, keyboard, mouse, CD/DVD drive and other hardware attached to your system. The BIOS and all its settings are stored in ROM i.e non volatile memory and the process of changing the BIOS settings is normally same for every PC i.e hit some key like F5 or F9 as your OS just start to boot.


Although this process runs on number of PC but for a few manufacturers it may be little tricky to reset the BIOS settings. The other alternatives for resetting BIOS may be removing the motherboard battery and placing it back after some ten minutes, or set jumper on the motherboard to clear the password, but these options not always work for all systems. So an easy solution for your problem is using a tool named CMOS De-Animator.

As the name suggests it is a very simple service utility for your system’s CMOS RAM using which you can either clear the BIOS password or to restore it to the password. The developer has also included easier graphical interface and CMOS-backup options along with the “Clear CMOS” procedure to make it easy to use even for novice users. So using this tool, you can easily backup the main CMOS settings to a file or can even restore them for future.

When you run this tool for the first time, you are required to give one-time activated administrator privileges. It will show you a warning as shown below even if you run it in administer mode.

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But I think this is just some flaw in this tool as even after showing the warning notification, this tool continues to run in the background and when you press on OK the warning window vanishes and then you can use this tool.

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The best part of this tool is that it supports both the 32 bit and 64 bit systems and there is no need to specify the type of your Operating system, It will automatically read the version of your Operating system. It also includes a self-test on its start-up to ensure whether the CMOS can be successfully accessed or not. Once it completes check, it will show status “Ready to go” and then you will be able to use this tool.

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This is the main window o this tool. From the left side, you can choose the Bytes you want to operate with and you can choose the desired action from the right hand side of window. When you are done with both. simply click on Proceed to start this tool. At the bottom of the main window, you can see the type of your Operating system and Program Status.

The size of CMOS De-Animator is just 206 Kb and it even doesn’t required to get installed and you can run it directly from its exe file. This tool is compatible with all the versions of Windows and has been tested successfully on Windows Ultimate-32 bit edition.

Download CMOS De-Animator

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