I recently bought this tablet and so far this issue has happened twice to me. I'll leave my tablet alone for like 12 hours and when I return to turn it back on, the lock screen doesn't load correctly. Instead, it will show a number of things from just a backlit black screen, my desktop icons(no desktop background or windows task bar and with no ability to click any of the icons), or a small Volume icon in one corner of the screen becomes visible for a short time. The first time this happened, I had to wait for the battery to die to physically reboot the tablet and now that it's happened again, I'm concerned it will continue to happen in the future. The first time it happened I also briefly saw an error message: Any idea what I can do to fix?