I have Dell tablet with Windows 10. This morning I turned on the tablet and checked the local weather. All done. Turned off tablet. Turned it on a couple hrs later, no desktop icons showing, no apps showing. Just have desktop picture showing. I can access internet and file manager from the bar along the bottom of screen. The Windows icon in the left corner does not do anything unless I press and hold for several seconds. Then I get a menu for system, control panel, etc. Downloaded and ran malware scanners, and Avast. No change. If I swipe the screen left to right, the desktop icons appear for a split second. Swiping right to left doesn't work. Any ideas?