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The HP ProBook 450 G3 was released in 2015 and has the model number T3L10UT#ABA. It has a 15.6 inch 1080p display.

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How do I disconnect and reinsert the external hard drive?

How i can fix it?

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Within Windows you first need to dismount the drive so the open files are properly saved. Failure can leave a drive corrupted! If that has happened try running CHKDSK. You may find a drive repair utility helpful as well.

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