need reboot sb5101 but require authorization

hello, i got one sb5101 it working for couple years, but yesterday just not working anymore, i get into the GUI it haxorware, and try to reboot it require username and password, i try every possible username and password i search on this forum but still not working, sbhacker/sbh    admin/sbhacker  root/sbh  

is there a way to remove the username password or reset so i can reboot the device?