Quote - I hope that Windows 8 continues to work for you but be aware that the move back to Windows 7 is not as easy as some think.  The file structure for Windows 8 is new and is not recognised by the Windows 7 installation.  It will give you a warning along the lines that 'There are no suitable hard disk partions'.  The Hard drive will need to be re-formatted and only certain programs will do that and is also dependant on the capacity of the hard drive. The other potential problem with a new machine is that there may not be Windows 7 drivers for some of the hardware.  None of this is a real show stopper and I would not want to put people off if they do want to revert to Windows 7.  I just pass on the information of some of the problems I have come across in the hope that anyone can make a informed decision.

Many thanks. Exactly. That's why I keep separate HDD's for data and system. System disk is an SSD and components are well established types you could buy 'off the shelf', so no specialties. But good to know all this.