Linux not booting

[Paulo Henrique Baptista de Oliveira]

        Hi all,
        I have a Debian machine that the monitor stopped to work and my friend
tried to change the video card also and now it isnt booting. The boot stop at
the line 
        ... Ok, now booting the kernel. This is with kernel 2.2.12 and with a
rescue floppy with 2.0.36.
        What I can do?
        Thanks,         Paulo Henrique
        PS: CC the answer for me.