Yo, now i have a problem, again. I was playing and was doing a shift+something combination, and i pressed the wrong combination, something like SHIFT+F9. Then, the bars from up and down disappeared, so if i want to press LFS down with the minus sign (right corner), i can't do anything. So i have to close LFS to go to internet etc. And when i enter servers, i see a RELOAD message there. So what is wrong with it and what should i do?

From what I understand, you've changed LFS' screen-size.

Press Shift+F4 to toggle between full-screen mode and windowed-mode.

Then in go to Options > Screen and select your screen size. When you hit shift+f9 by mistake your screen-size settings would've been changed...

I'm not exactly sure what you mean by the "Reload" message. Can you provide a screenshot of it please?

Very fast reply! Now i got it solved, thank you very much! And the RELOAD-message disappeared too.