Cant remember password, therefor I cant use it

You can try using this link Having trouble signing in to recover your google password. Do you remember if you associate a different email address to your google account when you created it because normally that is where they are going to send your google password.

If you have an iPad, follow this video:

https://www.youtube.com/watch?v=f79TRbSFFj8

If not, you can go to datadelete.com and you will find help there.

then it would seem that you will have to do a factory reset on the tablet. NOTE doing so will erase all of your data. What tab is it make and model?

Write down all passwords you remember to have used lately and try them one by one. If that does not help, you only can reset the tablet and reinstall everything from scratch. You will lose all the data and all apps already installed. This time write down the password and keep it somewhere safe. (a place you don't forget)

Hi, what make/model of tablet you have?

Often a quick solution to this problem is to simply restore the device to factory settings, however this would mean losing any data stored on the device.

Do a factory reset. see youtube video in attached link.
Nextbook Android Tablet Hard Reset

Not positive but think you will have to unregister the Kindle and then re-register it. You will lose everything.

if tablet has a reset password button or i forgot my password button use it

When you will enter your password wrong for 5 times, it will not allow to try againg for 30 seconds. It will show you an option named "forgot password". Click on it. It wll then ask you the email and password of the gmail id you entered to use your phone.

If is is a Windows login password, just reinstall the Operating System and forgo the use of passwords (if you can't remember them). If it is password on boot (before even Windows loads) there is nothing you can do about it, except take it to Fujitsu Certified Service Center to have the password erased.