explorer crashing

I generally access my PC multiple times throughout the day, so I like to Lock it or put it in Sleep mode. On occasion, the Windows Explorer (if its still called that) does not function after I awaken or unlock my PC. Neither clicking on the button nor pressing the Windows key does anything. I...

Just installed Win 10, and it seemed to install ok. But I can't tell for sure becaus pe Explorer keeps crashing ever 1 second or so, then restarts. If I go to Task Manager, I see explorer go down and come back up, and windows problem reporting come up and go down. Because it happens every 1...