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My main desktop PC runs Microsoft Windows Vista Ultimate x64. It has been running happily for many months and is stable.

In April 2008, Microsoft launched Service Pack 1 making it a required download via Windows Update.

It doesn’t install on my PC and leaves it in a continuous cycle of re-boots with error message:-

STOP: c0000139 {Entry Not Found} NtClearAllSavepointsTransaction could not be located

I have tried to apply SP1 5 times with the same result using different methods such as:-

  • Disabling all start up services.
  • Installing the full service pack.

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