So, my pc has been having this problem for a while now and I can't seem to figure it out. I have 3 HDDs connected in my pc for storage. One of them started frequently disappearing shortly after I would power it on. I would have to unplug the drive and plug it back in to the SATA port to get it to comeback each time (it wouldn't boot until I did so).So I switched the drive to another SATA port (Leaving SATA 1 unused) and the problem went away for a few days, but then a different drive started doing it on a completely different port. Both drives tested okay with Speccy and CrystalDisk. I am really lost on this one. Anyone got any ideas? I'm running Windows 8 and my motherboard is an Asus M4A88T-M