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Today when I opened my laptop, it displays the message smart hard disk error 301 and it tells me to run diagnostic test and gives me options on what to do. But the problem is that it passes the quick test but fails full test which runs only up to 18%. It also runs very very slow and at times when I have managed to switch on, it freezes and I think its because the processor has over heated.

Is the problem associated with hard drive or processor or both things need fixing. How do i fix this?

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Probably a hard disk issue. Is your computer running slower than usual. If possible, run diagnostics in a rack on another machine – aiao Feb 8 '13 at 14:21

You "fix" a failing drive by replacing it with a new one.

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