Forgot my dell Inspiron 1150 admin running windows 7


Hi how do I get back into my dell Inspiron 1150 it will not allow me to use my password recovery disc or USB reboot. I have no idea how to reboot as no matter what I attempt to do it requires this admin password,,does anyone have any suggestion to get me back on my laptop, I'm use to a newer version of windows as this is my moms and I'm attempting to help her regain access