|What bothers me is the number of this same issue. I'd suspect a virus or worm. Take all of them off network and reload from known original sources would be my best choice. Then take drastic actions to monitor all media and lan/wan for source of this.|
Try booting to xp disk and use repair. Any disk that is same version and level would do fine. Mup.sys is normally some driver.
May be possible to use a bartsPE to attempt a restore point.
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