I think I have deleted my windows OS while installing ubuntu , i meant to do a dual install but while doing this i messed up my partition wiping my whole hard drive clean. i was not able to boot any OS it just came up with a error. i was able to use the ubuntu live CD to get onto my hardrive there was nothing there my laptop wouldn't allow me to install ubuntu ether but after i was able to partition my drive so i could install ubuntu but still it will not allow me to install windows . I don't know much but i think i have to re-partition my drive so it will allow me to install windows again. i have another feeling its because i don't have the service packs needed to install windows 7 but ubuntu will not allow me to install these ether.
Ps. while installing Ubuntu I clicked the make space option while installing
a link to a video showing what i mean - http://www.youtube.com/watch?v=UuYX1la1ngs&feature=plcp