macbook stuck on windows install page?

i was doing bootcamp on my macbook pro 2010 edition ..It reached in the install page. I clicked install .

.It was going well suddenly it stoped on 71% on expanding windows and message came .Windows cannnot install required files.the file maybe corrupt or missing error code 0x80070017..now i dont know what to do whn i restart it starts from a black page which says boot from cd or dvd ..i dont know how to get back to my mac osx..plzz also tell a way to install the file also..