my macbook pro has crashed during latest software upgrade and now i cannot log on
Sofware update on macbook pro crashed now only works in safe mode
MacBook Pro, OS X El Capitan (10.11)
Could you please explain in more detail? there are no updates for El Capitan at this writing. Were you doing the initial Install of El Capitan? Did it crash during the install or after it completed?
when you invoke Safe Mode, what version of Mac OS X does it claim to be?