Can't log in iMac

[willp240]

Yesterday, I came home, and my iMac was off--weird. I turned it on, the login page came up. I clicked on my account name, put in the password. The screen turned white and showed the login screen again. I tried logging on on "other," but same thing happens, probably because the computer account user name and password is the same as my server user name and password. I can log into the guest account, though.

I had my internet service changed yesterday, and the phone company guy messed with my router, and ended up clearing the router's name and password, and I have no clue if that is the problem, which is why I cannot log on to my server account.

Any clue?!

 

[Betseyb]

I am having the same problem. I have a iMac, OS X. Someone please advise.

 

[old-wiz]

try booting in safe mode. and tell us what version of osx and what iMac you are trying to use.

 

[Dave6036]

I have the same problem. I have manage to remove the passwords on all accounts via the guest user, but when I click on any of the others the screen gos white and then returns to login. Please help, no very good on computers.