Agilent 7000D - MS gone offline

When I came to use my 7000D this morning it seems that the MS (but not the GC) has taken itself offline for some reason! Despite doing all the obvious stuff like restarting the software and then the computer several times, as well as checking the ethernet connections to the instrument, this doesn't resolve the issue.  
From the screenshot, you can see that all the MS parameters (second row) in Masshunter are blanked out and the instrument status has gone to ‘Offline’. In the same vein, tune and vacuum control menus and are also unavailable which is a problem given that one possible fix might be an MS restart (which I would imagine requires a vent), the controls for which are in the vacuum control menu.
Can anyone suggest a reason and possible resolution to this please? Is it possible to restart the MS without having to vent down? If venting is required, how is this done without access to the vacuum control menu?
Kind Regards
R
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