I had done a CHKDSK /R just now ,a message occured all of a sudden in the boot screen, which states" a disk read is occured" press Ctrl+Del+Alt to restart.When I use the Partition Magic Bootdisk to troubleshoot the problems, the drive letter is missing and accompany with a FREAKY LABEL "A???????????".I add another hard drive ,change to master ,install a new window,for the purpose to take out all the neccessary files from the faulty hard drive.As a result, it is failed !!when I click on the faulty drive a message prompted ask me to format it .The CHKDSK command also won't work because it cannot detect the drive with the lines of freaky label.So is there anyway to change the drive label and fixing the problem?