I am trying to install it on a brand new computer, and keep getting error 0x80070570. I found out that it might be a bad media, so I made a fresh copy from a disc that worked for me before, and kept getting the same error. I then just used the known-to-be-working disc, and the same errors came. I tried switching dvd drives, thinking it might be something in the hardware, but it didn't work. I downloaded the iso again (7 ultimate x64), burned it on the slowest setting. Again - error 0x80070570. What can be wrong with the computer? Can it be something with the hard drive? the motherboard? It is a Gigabyte GM-G31M-ES2C rev 1.1 - any known bugs with it? Or maybe some special bios settings I should use? The hard disc is some kind of Samsung 300GB. Anyone else have encountered those problems?