Forgot password and unable to log in to the laptop

"This sounds like a BIOS password to me. You are going to have to remove the CMOS battery or find the BIOS/ATMEL chip to remove the password.

There's going to be 3 ways you can do this. The first one is just to remove the CMOS battery, which will work on most pre 2010 laptops. The second is shorting the BIOS chip or some pads, which is common on circa 2010 laptops.

The third is you will have to short the ATMEL chip in the laptop and then boot it to clear the password. However, be warned this can potentially lock the laptop in tampered mode which may brick it. If it doesn't lock you out, it will let you know.

I would suggest the CMOS battery first. It's the least risky of the 3 options.

NOTE: If you are dealing with a ThinkPad, DO NOT REMOVE THE CMOS BATTERY! This will result in the notebook falling back to the SVP. If it has one YOU WILL LOCK YOURSELF OUT OF THE LAPTOP!

Older consumer grade machines typically use CMOS RAM in the BIOS flash chip, while newer machines (crica 2010) store it in the BIOS chip using battery backed CMOS RAM that lives in the BIOS module. This is why you need to mess with the BIOS chip in a lot of these newer laptops.

On the business models, they use ATMEL chips that are usually encrypted. It's been like this since the Dell C series and the ThinkPad 390E.

Update

Here is a link on some master passwords. These are all fairly old, so they may not work. If the laptop is newer, the password is based off of a unique number that's tied to that machine via serial number/service tag rather then a single master password.

Note: I DO NOT ANSWER QUESTIONS ABOUT BIOS PASSWORD REMOVAL ANYMORE."

"If you forgot BIOS password, you can remove the CMOS battery or use a backdoor password. click here

If you forgot the system password, you can reset the password by creating a reset disk with third party software. click here"

"try restarting the computer in safe mode and try resettings the password fo your admin account using command . if you have already setup a email account with you admin user account ( windows 8, 8.1, 10 )

than you can also log in using that email . for other steps visit FIX-how-to-reset-windows-password- . See if this works"

"Try this. Ralph

http://www.technibble.com/how-to-bypass-..."

To reset the password in windows, you will first need to boot the computer into safe mode. Hold F8 as the computer boots (Before the OS loading screen) and select the "Safe Mode" option (Not "Safe Mode With Command Prompt" or "Safe Mode With Networking") The computer should then boot up, but there should be an additional "Administrator" account. Log in to this account (There shouldn't be a password, but if there is, try "admin") and navigate to the User account panel in control panel. From there, select your account name, and select the "Remove Password" option. This should clear the password for your account. Shut the computer down, and reboot like normal. Your account should have no password.

"If you want to keep your OS and data safe then they best way to fix this issue by taking the motherboard backup battery out and put it back using following steps:

You need to open the lower black panel apart for this you can follow the online YouTube tutorials. Once panel is taken apart then you will see a small battery cell connected with 2 red and black wires via jack. Take this jack off to disconnect the battery for about 10 mins then put it back and try turning on your pc. This shall reset your BIOS passwords etc and then you would be able to login in to your PC."