Hi everybody, I have some problem with opensuse. I can't access to graphical login and I have a black screen where it asks me to insert username/password. Nevertheless I receive the message "LOGIN INCORRECT" for every usernames and passwords that I insert.
(I tried also "user" "root" "admin" and the tipical passwords).

I don't know how I can resolve this situation. I hope you help me. Thank you.

(Probably I have this situation since when I restarted pc, from the power-button, becouse a software installation on opensuse was blocked).

Not many details to go on...what version of openSUSE?? And there are no 'typical' passwords, and there aren't any "user" or "admin" accounts on a system, unless you manually added them after the system was built. Root should be present, and would require whatever password you set for it.

Can you tell us what EXACTLY it's saying on your screen??? Just saying "black screen" with no context/other messages doesn't give us much to go on, other than to tell you to put in the correct password. And what do you mean by "software installation was blocked"????

Sorry..You can see here what happens : https://s14.postimg.org/h5ppzhngh/P60828_165441.jpg

Ok...that shows that you entered a user name of slevin, and didn't provide the correct password for that user. Did you try putting "root" as the user ID, and the root password?? Was this system ever working? How long had it been functional before this happened???

What is the root password? Anyway I have this situation since when I restarted pc, from the power-button, becouse a software installation on opensuse was blocked

I tried
Username:root
Password:
Login incorrect

Username:root
Password:root
Login incorrect

It is whatever YOU SET IT TO BE. This was done when you built the system. Chances are, it's the same password for the user you set up.
Right...this is what you said previously, and you were asked what you meant by "blocked".
Fine...again, the root password you're entering is wrong. Try another one. This was something that you set. There are ways to get around this by booting from CD/DVD/USB (however you installed openSUSE 13.2), but those are much more involved than entering the correct password. And again, as you were asked previously, was this system EVER working, and how old is this installation?

I solved making upgrade with DVD of opensuse! Thank you anyway