It can happen after a software update or hardware (or for no apparent reason?) That the service mysqld.exe crashes each launch. A solution for this is:
  • Close the application that executes mysqld (eg Wampserver ...)
  • Start> Run
  • Run command: services.msc
  • Right-click on the "mysqld"> Properties
  • Connection tab> Check "Allow service to interact with desktop"
  • Apply Changes