Looking for logging into the Joomla 1.5 Admin Doesnt Work site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Joomla 1.5 Admin Doesnt Work site. After that you can login as usual with your login credentials.
https://forum.joomla.org/viewtopic.php?t=278353
https://www.siteground.com/kb/i_cant_log_into_the_joomla_backend_as_administrator/
https://www.itoctopus.com/login-to-joomla-administrator-not-working-and-no-error-is-displayed
https://stackoverflow.com/questions/3496775/joomla-admin-login-problem
https://forum.joomla.de/thread/6042-administrator-login-kann-mich-nicht-einloggen/
http://www.pwrusr.com/web/cannot-login-to-joomla-backend-as-admin
https://www.youtube.com/watch?v=ywOHyOf7kkc
http://www.webmacher-faq.de/index.php/faqs/online/747-joomla-admin-login-funktioniert-nicht-mehr
https://www.gavick.com/blog/joomla-when-youre-not-able-to-access-administration-panel
https://joomla.stackexchange.com/questions/4764/cannot-log-in-to-joomla-front-and-back-after-site-move
https://tompai.pro/joomla/solved-admin-login-nothing-happens/
https://www.werockyourweb.com/joomla-how-reset-super-admin-password/
https://www.wegweiser-homepage.de/joomla-login-ins-backend-nicht-mehr-moeglich/