What version of CCM/BARS are you using (I'm guessing 4x as you mentioned Windows)?
In CCM 4x you can find a detailed log on BARS jobs via this directory:
c:\Program Files\Cisco\Trace\BARS
In CCM 5x + you should be able to get the same logs via RTMT > traces.
I'm don't think you will see much in the Event logs.
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