Hard Drive Test

I think I have an intermittent fault with my hard drive. Every now and again it wont start up and has a black screen saying something like invalid disk press ctrl+alt+del to continue - but nothing. How do I know its that for sure or something else, is there a test I can do on it when it is working?

Or what else could it be?

Thanks.

  ICF 08:36 18 Jun 2011

Make of hard drive?

  mgmcc 08:37 18 Jun 2011

If you go to the drive manufacturer's website, they may have a diagnostic tool you can download to check for any faults.

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