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« on: December 03, 2014, 12:41:01 AM »
Misery loves company. I am not a guru and therefore offer you no solution. However, we have been there with some of the issues you describe. I don't recall that our DRO issue matched yours exactly, but the stall and on one day, off another does match.
Not only was stalling an issue, but we have a slaved drive gantry wherein one of the slaved drives would simply reverse and thus stall the gantry. It took some time to figure out that it was more than a simple stall. Replacing the drives cured the issue . . . for awhile. I am using the old drives on another project and they do or cause some strange stuff.
Then several months later, just as you describe, things went south again with stalling as you describe. It happened immediately after installing a new app. We did absolutely everything you described, including formatting the HD, in an attempt to resolve the issue. It may have been Gerri who suggested the fault was in the computer. Because it is a nice expensive panel mount industrial tochsceen we had IT check it out. IT found nothing wrong . . . twice. We executed your procedures two more times and still no change.
We replaced the computer and the problem went away.
Also, during the aforementioned, we did experience odd error/use messages and DRO readings. We did not delve directly into them because they vanished with the computer change.