Thanks for the 'steer' BOAC
Guess what!
Capacity: 203.92 GB
Test result: Self-test routine completed with a S.M.A.R.T. alert error!
The Drive Self-Test has determined that the drive may have one or more failing sectors. Please run SeaTools Desktop for additional information about this problem.
Any drive reporting a S.M.A.R.T. error should be considered likely to fail at any time. You should back up your data from any such drive as soon as possible.
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I've ordered an external HDD via the web and shall keep this PC running all the time!
Thanks guys.
TG