Okay so, having a bit of trouble getting this to work, got the installation disk (yes a genuine windows 7 home prem). Now to boot from disk (Just to add the plan is to do a full re-install of the OS keeping no user files) I've tried holding shift when restarting to get into the windows 8 options and selected boot from disk. Now I've done this a million times with no problems but with this machine I'm getting the windows boot manager message about digital signature errors. Also tried F12 boot options selected the disk...it loads but then i get "UEFI DVD1 Path1 has been block by the current security policy" So I've looked in the bios setup (F2) but can't seem to find any UEFI security information, everything seems to be okay in there but I'm sure I'm missing something, damn windows 8. Any ideas would be great, cheers.