Big problem

[Maureen L Thomas]

A friend of mine bought a refurbished computer.  It is an all in one 
ThinkCenter by Lenova.  I have changed settings in the CMOS so that the 
USB would show up first.  Nothing that I have done works.  It just says 
no files to load and I tried many times.  It is an older computer and it 
weights a ton.  Can anyone tell me how to get Linux on this machine.  
Since I did not buy this one I have no idea what is inside of it.  Hope 
some knows how to get around this problem.