My Sony Vaio laptop froze and i had to hold the power button to restart it. It got stuck on the screen where there is a bar on the bottom with something sliding across. It goes to a blue screen with the error " Stop : 0x000000ED" and Unmountable_Boot_Volume. Vista came on the computer when i bought it this spring, i haven't added anything new to it with in a month before this happened, disc drive has nothing in it. Anyone know how to fix this or what causes it? Tryed to run safemood and all of the other options, the onlything i haven't done yet is to use the system restore disc.