Two options I can think of.
1-If you don't have files,photos on the laptop that you don't want to lose you can do a> System Recovery to restore back to Factory settings by tapping F11 key at power on.
2- Download PC LoginNow. Click the .exe file to extract the ISO file and use ImgBurn to burn the ISO to a cd. Boot the laptop with the cd to clear password.Download and Guides HERE