Hi, FFF
The reason you will not have been presented with the repair option, is because no operating system is being detected. You need an OS installed to repair it, of course.
As XP was obiously installed, then this presents us with a different problem.
The Hard Disk Drive could be damaged or the Master Boot Record, MBR, has been corrupted.
First thing to do would be to enter your BIOS setup and check that your Hard Drive is being recognised properly. It informs you on your Boot Screen how to Enter Setup; usually by pressing F2 or Delete e.g.
But first, could you please tell us the manufacturer and model of your system; or the spec of your PC if not purchased as a whole system.
Motherboard, Processor, Memory, Video, Hard Drives and Power Supply.
This will allow us to give you clearer instructions on diagnosing what's wrong here.