Hi, I have two identical hard drives in my pc. Model samsung HD103SJ ATA. I've been having some problems with one so I used the program HDD Health to check their state. Now one of them has a 16% health and it says critical. What does this mean? Can I fix this? And how is it possible that the other drive has over 80% health while this is the one that is used all the time. (Broken drive is only for windows backup).