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All of you have given helpful and potentially useful recommendations, but noone has yet mentioned the most likely cause:

Posession by evil spirits!

That's right! These chips are now so complex and intelligent they can indeed be posessed by evil demons. This is the only conclusion I can come to after all the years I have dealt with intractable computer issues.

The only solution is digital excorscism or execution, followed by rebirth and resurrection.
(ie., trash it and get a new machine)

Hope this helps.



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