Carlos, Patrick On h1ecatx1 we found that the Power Efficiency Diagnostics -> AnalyzeSystem task was enabled. The 'Triggers' was 'At 6:00 AM every 14 days'. The 'Last Run Time' was '08/04/2015 2:13:32 PM'. The 'Wait for idle for' was '2 hours'. It was disabled on h1ecaty1 and h1ecatc1. This is something that Beckhoff had told me about a while ago and I just thought to recheck. I suspect this may be the cause of h1ecatx1 crashing every two weeks on Tuesday. In addition we disabled the following services on h1ecaty1: Windows Defender Windows Update Windows Search Adobe Acrobat Updater and the following services on h1ecatc1: Windows Defender Windows Update Adobe Acrobat Updater