I've installed mint linux on my laptop today. I turned the instalation of updates. Everything have downloaded and instalation started. At the end of instalation the updates, I had to leave my home, so I left laptop turned on to finish the instalation. After 2 hours, when I came back home, I could have only seen a black screen. Nothing was happening. I turned it off by holding the power button. When I turned it back on, logged in, the only thing I could have seen was the mouse coursor. Nothing have loaded, no desktop. Only thing was the mouse coursor. Enyone knows how could I repair it?? I don't know what to do. Please help.