This could be a Service which has stopped running, or a dependency of the Service.
In this case the Service is the Volume Shadow Copy, also know as VSS.
Click on the Start orb, they type service in the Search programs and file box.
Service will appear in the results above the search box, right click on it and choose Run as administrator.
When services opens scroll down to Volume Shadow Copy and double click on it.
Under Service status you will see Start and then Stop. If the Start option is grayed out this means that the Service is running.
If the Service is running, click on the Dependency tab.
You will see an image similar to the one below.
Under [/b]This service depends of the following system components:[/b] you will see Remote Procedure CALl (PRC).
Find this in the Services and make sure it is running.
If either of these is not running change the startup to Manual, then click on Start.