I will also get an i5 2500k, Windows 7, and a EVGA GTX 570 2.5GB. All of this is about $890. I will be playing at 1600x900 just so you know. My main concern is that I will lose all the data on my HDD. Will I lose all my data? I know I have to re-install Windows 7, but will that have any affect on the hardware or data?