How do I get back into my Multisite admin?

Recently I was unable to log in to my Multisite admin so I deleted all the security plugins from FTP and all associated tabled from the database. The problem still exists however I can actually login to my sub/child sites, but every time I try and visit my parent site Dashboard I am redirected to the login screen. After I add my credentials the screen refreshes without granting me access. I changed the password via the database but it made no difference. I also changed the password via lost passoword mechanism but again this did not work. Any idea what could be going on here?

Thanks