You mention that others can get into console. Are they using the same credentials or are you all using separate accounts?
You might try going into the CMC shell, and under MANAGER run a STOP and then a START command (though since it's working for others, I don't think that will fix it)
You may have a corrupted user account (if you're not all sharing the same user), in which case you'll need the helpdesk to root into your machine and remove the damaged profile so it can be restored.
With LEM versions 5.6 and lower (I haven't seen reports of this issue with 5.7), the logout button may corrupt your profile, so don't use it! Just close the browser.