That sounds like the windows8 "secure boot" ( read locking out other OS's )
Also " no partitioning ??? "
that might be wubi ( it is a ubuntu thing )
And as far as i know it has no support for win8 secure boot
Windows7 and wubi - yes , but 8 ?
with win8 Microsoft is causing all kinds of problems for the rest of the world
( and not really making win 8 more secure )
and search this forum for "secure boot "
you will need to use google for a two word search using the "site" tag