Hello,
so the sapsystem won't start cause the password is incorrect ? If this is the case you should combine both suggestions from Bret and Christoph, if you don't know any password for all logins. They key is the sapsso login:
1st) Create a new password for sapsso. Follow KBA 1872806, but instead of -psa you should use:
-psapsso
This way you will get a password for sapssso. Beware this is only printed to the console as mentioned in KBA 1872806.
2nd) Now follow Note 1706410, and use the new password from sapsso to reset all passwords in the ASE and the secure store.
Hope this will help.
Regards
Stefan