virtualbox.org

I start Windows 7 on VirtualBox. When i have to put my password on win7, the screen displays only one line.
I don't know what to do.
Please, i need help.

That sounds like normal Windows behavior if you have one user, or if the user is pre-selected.
I'm afraid that this is not a VirtualBox question, it's a Windows basics question.

Dont know why. But the security mode works, only when I try the normal way that the problem shows. It appears just like a line.

Please post a screenshot showing the problem. If you have a HiDPI display, please resize it to 50%, or more.
What's security mode? What's normal?

This is the problem.

Ah, OK. That's why they say "a picture is worth a thousand words". I've seen this problem before, I simply don't remember the fix. I'll try to find out...

I'll move the thread to "Windows Guests" from "OSX Hosts", because there might be more users there that remember the solution.