I have two Vista machines, one laptop & 1 desktop. I managed to install win 7 on the laptop, (I love it) these are not critical computers, so I play with them alot. I have downloaded another download and have burned 5 disks on different burners and different computers. About the middle of the installation (installing to a Vista machine) it stops and gives an error code, 0x80070570, and will not proceed. says something about missing files. Does anyone know what's happening. I search the internet and it says according to the error that it is corrupted. Please help, and thanks in advance.