I am not an expert on that questions so please be a little bit comprehensive for my ignorance and simple as much as possible in your answers. I have an old toshiba satellite L45 32 bits who used to work with vista before his first crash (don't ask me why I can't tell you why) in which I would like to install ubuntu 12.10 - I get a usb drive from a friend. When I use the option 'try ubuntu whithout installation' everything work very well -that is how i can actually post my question, with the usb drive connected. But if I try to install ubuntu on my computer, the following message appears when I restart the computer, and that is weird, after the complete installation - I did it many times : " failure reading 0x258da8 from 'hd0' Press any key to continue..." According to everything I read so far, it seems to be a kernel panic (?). Is it possible to recover from it ? Am I condemned to use the usb drive each time that I want to work/surf ? If someone has a solution, please let me know how to repair it because it's my only computer. Thank you so much.