I have been reading the threads on this site and people talk about booting the system or downloading from other sites. What if you can not even get into your PC. The Blue Scrren comes up and I casn not do anything but shut the computer off and turn it back on. I have a Dell Dimension 4700 What do I do? The message I get is: UNMOUNTABLE_BOOT_VOLUME STOP: 0x000000ED (0x81D5AB30, 0xC0000006, 0x00000000, 0x00000000) Any help would be great. Do you think I need a new Hard Drive?