So my steps:
I downloaded the iso's and checked them;
I installed them in an empty drive;
Installation runs OK (personalized)
LILO runs OK (I have windows98 in another drive)
Mandriva starts
Mandriva hangs in a black screen with coloured stripes
Tried to reinstall mandriva (install all)
Hangs again
Tried another resolution and always hangs on test option (must turn off the PC)
Tried another video card with the same results (the installation recognizes the correct card but it didń work)
Downloaded new driver for Nvidia
sh nvidia didn't complete
I'm switching to Fedora now and will wait for another version