Hi! Yesterday I restarted my computer, and suddenly it didn´t recognize my HDD, and therefore did not want to load Windows Vista. The BIOS stated that no HDD was installed. I restarted a few times, and suddenly it was back, and a message told me that Windows could not load, giving me options of Normal Startup, Safemode etc. I´ve tried all of the options, and after loading a few seconds the computer will just freeze. I´ve been able to start with Ubuntu and Knoppix Live-CD, and Ubuntu detects the two partitions of my drive. I cannot access the Vista partition (error message with a suggestion to run chdsk /f from windows, something I obviously can´t do...) but I can see the contents of the second partition (but I can´t open the files, I get a read/write error). I´ve also tried to reinstall Vista (booting from DVD) but the installation program doesn´t detect any discs. Is this likely to be a physical problem or could I repair the disk if I format it or something? Any help appreciated.