Windows 7 boot up failure

I am using win 7 RTM and I tried to install OSx86 in my second hard disk. after a few failure I have successfully installed OSx86 in my secondary had disk now the problem is that I can’t boot win 7.
I have changed boot order and I tried windows 7 disk repair but both are failed. I have seen some Boot ntldr missing. Please help me about this.
