How long does startup repair usually take?

lch279

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Mar 26, 2014
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I have started a startup repair on a dell Inspiron windows 7. It has been more than 35 hours and all I see is the blue bar moving and it says "repairing disk errors. This might take over an hour". I have tried to cancel it but it says "the current repair operation cannot be cancelled". Should I wait or press the power button and start again?