White lines
 

When I press the buttons CTRL ALT F1 then I see a black screen with
white lines. The same result by shutdown the computer.
This is only when I work in a graphical interface.

I have the Nvidia (NVIDIA nforce2 GeForce4 generic) driver come with it en I use Mandrake 10.1.
I'm new to linux and I'd really appreciate it if someone could help me out

Thx

i presume you mean you want to be able to log in there? helps if you say what you expect to happen / want to achieve.

what do you see when the system is booting up? it sounds very much like a framebuffer issue. if you modify the boot command (e in grub, and erm.. esc in lilo ?) and add vga=ask to the line, on boot you'll get a short menu of video modes, pick one and boot. it'll look much less attractive when you do, but you should be able to ctrl-alt-f? to another terminal once X is loaded. you could also try using a different size framebuffer by setting the vga= value to a mode listed here: http://www.linuxquestions.org/questi...hreadid=152575 if you find one that works better (a different colordepth on the framebuffer might clean it right up) then you can easily code that as a defult in either grub or lilo.

also, you can try editing the boot command and (afaik) adding a "3" to the line, this will then stop X loading (once only) and let you log in... if that works, then it seems X is playing up, in which case post the contents of /etc/X11/xorg.conf