Hello. I have a Fujitsu lifebook (tablet pc). i just turned on my computer a few minutes ago and all after the startup i had none of my files. all of the programs i had previously had downloaded were all there, but all of my files such as notes for my classes were gone. this was quite a scare but i rebooted and they reappeared. am i at risk for losing my harddrive. i'm ging to backup my files asap but i'd just like to know. thanks.