Stuck with no Boot disk for windows 7

It sounds like you will have to buy another W7 installation disk and use its product key to install the OS onto your new hard drive. After your system is installed, be sure to back up your system periodically to a backup drive or media. I have successfully used Acronis to restore my system after hard disk failure, but there are other programs that will also work.

You can use any correct version win7 installation disk with your product key. Some versions have been available as a ISO (disk image) download on the web.

The thing is out of three computers I only got 1 windows 7 re install disk, and its long gone, I dont have the money to dish out $100 for a new Win 7 Disk

Free in some instances!

It's possible you could take it to a local repair shop which would use their disk and your key, and hopefully not charge to much.

Alright, I found an .ISO image for 7 professional and when I go to custom install, it stops on expanding windows files and I get "Error Code: 0x80070570" any help would be apprecieted