What does the 1720-SMART error message mean and what should I do?
The 1720-SMART Hard Drive Detects Imminent Failure error means your hard drive is about to fail. You should enter Computer Setup and run the Drive Protection System test under DPS Self-test in F2 Diagnostics, apply any available hard drive firmware patches, then back up your contents and replace the hard drive. (Page 2)
From the official HP Compaq Pro 6300 SF Desktop manual, page 2
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