Server is out of memory! Check files!
Your server will be crashing if you don't ensure enough memory--usually the virtual memory is impacted by filling Drive C or any other drives--delete unneeded files!
Also check the Server memory configuration and any possible large memory users. The Inventu Viewer Service and FVTerm v4.0 Application pool do not require or allocate a large amount of memory, so check for other applications with the Task Manager.