Cant recover lost bios password for lenovo G550and its not allowing to boot my laptop

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If you are referring to the BIOS password then there is no other way to unlock that. You need to send in you computer to lenovo Depot repair department. The number is 18774536686.

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Try with External USB Key board. To enter BIOS setup utility, press F2 when the Lenovo logo appears during starting up your computer.

Hope this helps to you....

in my laptop g550 bios password is set i am change the password

Are you referring to the Windows logon password or the BIOS password?

go to biaos setting and disable password

You CAN enter your Lenovo computer by clearing the current administrator password.

Windows Login Password Recovery is the tool that you need in your case. The password recovery tool is designed to reset Windows login password once you accidentally forgot it or have no access to your system including Windows 7, Vista, XP etc. By burning a bootable CD, you can enter almost any computer with Windows administrator login password protected within a few seconds. Here are the step by step tutorial, pretty easy, I am sure you can handle it!

Step 1: Download Windows Password Recovery and install it on another computer.
Step 2: Prepare a blank CD/USB and run the software and use it to burn the ISO file to it.
Step 3: Put it into the CD-ROm and restart your locked computer. Change the BIOS setting of your locked computer to make it boot from the CD-ROM or USB drive. Note: start computer and press F2 or Delete to enter BISO setup
Step 4: Boot your locked computer from the created disk and remove your forgotten password.

can't rermember Login password

The only simple way to Erase the forgotten Bios Password is to Reset the CMOS Battery.

fist go bios & give boot from cd RAM save it exit from there insert XP CD it will ask you press any key ,just pess it then it will start coping fails & drivers after that XP will install ok