This has been the bane of my existence for over a month! Now we are meticulous about backing up our files so we were never in any danger of losing your files, but it did hinder us in getting anything done for the last month. The word from the Tecchie is the motherboard failed. Then we get the computer back and the power source failed. We finally have the computer set back up and it is working kind of. I kept the motherboard so it can remind me how something so small can be so significant!