Go to the Scheduled Tasks tab in your Control Panel Create a new Scheduled Task and select the Steam Update option Give it a name of your choice, 4 Hour Steam Update for example Select the date/hour you want to next restart will to go Select Recur Every 1 Days Select Repeat task option Select Repeat Every 4 hours Select For 24 Hours Select the Script Parameters tab on top and change it to Update only if a new version is available Save the task Example pictures below. Only when new Versions are available.