Problem Solved. I don't remember where I read it, but a suggestion for my Acer Aspire M5100 running Windows Vista Home Premium, was to shut down
my computer. Let it sit for about 5 minutes, then UNPLUG the Power Cord from the computer. After unplugging it, the suggestion was then to hold the Power Key on the front of the computer on for about 10 seconds. I did this, and even with the Power Cord unplugged, it briefly lit Blue, (Signifying it was on) before staying off. I then put the Power cord back in, Rebooted the Computer, and all my drives were back in place and all my system seems to be working fine. So, I did a System Restore and marked it with a special name. Internet seems fine. Downloaded mail fine. Camera, speakers and printer are all fine. So, I am taking this as case closed.