Hello Richard,
After the few hours, does the machine get woken up from sleep mode? Please verify the DocuWare desktop service is set to Automatic(Delayed Start)
You can do this by going to Start>Services> DocuWare Desktop Service>right click propteries>there should be a startup type with this option after selecting the dropdown arrow. Please let me know.
Best Regards
Shawn Rutigliano
Software Support Analyst
Team RED Americas