how to solve windows7 invalid password

Solution
We cannot help you with restoring your password to your laptop, first, because we cannot verify it is in fact your laptop, and second, there aren't many useful tools to do it anyway.

If it happens to be a more technical problem than you've described (please put more detail... I have no idea how we're expected to help with the limited information you've provided) then maybe someone can help, but we cannot offer assistance with password recovery.
We cannot help you with restoring your password to your laptop, first, because we cannot verify it is in fact your laptop, and second, there aren't many useful tools to do it anyway.

If it happens to be a more technical problem than you've described (please put more detail... I have no idea how we're expected to help with the limited information you've provided) then maybe someone can help, but we cannot offer assistance with password recovery.
 
Solution