My ubuntu don't mount the local file system on boot and unistalled the nvidia drivers. The mouse don't work. Whats appen... It's something of file system error? What can I do?

did you add entries to /etc/fstab for the auto-mounting at boot time? if yes then we have a bigger problem. if no then search here or elsewhere for how to do it if unsure.

ubuntu uninstalled your nvidia drivers? so you installed them and had them working then ubuntu removed it? i doubt it.

mouse doesnt work? has it ever worked in your distro? what kind of mouse? did you edit /etc/X11xorg.conf in the inputsection appropriately? post that section if you havent. or just search here on how to do it.

its much easier to create seperate threads for each individual topic (i think). as it forces the readers and you to focus all your attention on that specific problem/thread. its easier for us to help solve one problem rather than 4 problems in one thread.