Gotsaed :
I was able to to install using legacy mode so now the computer is running windows 8 in legacy mode - is there any way i can change that and get back to optimized defaults without uninstalling? Or shal I just leave it in legacy?
Well, if you installed in Legacy guess you're stuck with it, UEFI requires info to be written to your Hard Drive and you'd need to re-install to do that. Then you're back to square one being unable to install in UEFI mode... Is the system running OK? If so leave as is, but if it's desperately slow then perhaps have another try at re-installing...