I've had a few of these Sylvania netbooks and a couple have bricked themselves in this same way. I'm guessing cheap NAND and being powered off for a long time was the culprit. I was able to fix them by re-flashing Windows CE with one of the upgrade images Sylvania released many moons ago. Since I can't seem to find it online anymore, I've reuploaded it here -- https://drivby lrussell887 - uBoot