there are videos how to reboot the phone.but u have to enter the same id which ur using.or else u cant use the phone.and one more thing.if u reboot ur phone as u dont remember ur password you will be losing ur data or till ur last back up.
Thanks for sharing your concern. We would like to inform you that if you have set the backup PIN for the lock screen then you can reset the pattern by entering backup PIN else we would suggest you to visit nearby Samsung Service Centre in order to get your device physically inspected by the service engineer. Please find service centre details in the link provided -http://www.samsung.com/in/support/servicelocation
Be sure to hit ♡ when you find an answer that works for you. For Further assistance, you can get in touch with us via Live Chat option by following- http://livechat.support.samsung.com/Customer_new/IN. You can also connect us via Samsung Members web community by following mentioned url-https://community.samsungmembers.com/en_IN#/
