Leonardo is freezing my PC

Hi, i recently bought my first Arduino (Leonardo). I downloaded lastest software (1.0.3) and I tried to instal drivers. (I have Win XP SP3) I instaled the driver, but then the instal window appeared again, so i repeated the instalation. Then my PC freezed. So i hard restarted it and tried to connect Arduino and PC immediately freezed again. Next restart. I uninstaleed drivers and installed again. Freeze. Restart. So I looked for help, but found nothing, so i tried to instal again many times, various types of software, methods, but always freeze. When i try to interrupt instalation my PC freezes. What should i do? Thanks for your answers. (Sorry for my English)

Solved. I reinstalled Windows and Leonardo works now.