All of a sudden(after moving house!)I am now getting a message that 'Drive not found: Serial ATA, SATA-2. Strike F1 to continue, F2 to run Setup Utility'
Pressing F1 starts the Dell Dimension 5100 normally.
What has changed and how do I revert to normal operations?
Thanks all for your efforts, BillSers and Jollyjohn especially.
Problem was a 'confused' BIOS. Removed power cord, removed CMOS battery, held power switch for 10 secs and then replaced a new CMOS battery.
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