I am putting a new hard drive in a computer. I have the registration key for windows but not the disk. I downloaded a copy and was prepared to transfer via Coolmax hard drive adapter. Two problems.... Using power iso to run it says... Then when I tried formatting the hard drive it wont do it via coolmax and I tried to find a way to get into dos to do it but I can't. I guess my question is how do I install windows this way. I would prefer NOT to burn a copy to a CD and run via cd because I don't own a cd burner and would prefer not to by one just for this job.