which will reset the Transactional Logfiles. I now think this is the likeliest cause.
TypeYand press enter if you are asked "Are you sure" to any line.
Once it has completely, please right click in the Command Prompt, select Select All, and then right click again. Nothing will appear to happen, but it will have copied to the clipboard. Please paste the output here.
If that doesn't do it, please upload C:\Windows\SoftwareDistribution\ReportingEvents.log