البته بنده نگفتم کارت گرافیک خرابه، یک لینک از Microsoft قرار دادم که توضیحات کامل در اون ذکر شده...Computer screen goes black during the Windows 7 installation process
AMD implemented eDP support after the Windows 7 DVD was finished. Therefore, the AMD Radeon graphics driver on the Windows 7 retail DVD does not support eDP
AMD has released an updated driver that fixes the eDP issue. The update must be incorporated into the setup process for setup to complete successfully
البته اگر دوستمون مدل دقیق کارت رو میگفت میشد دقیق نتیجه گرفت که مشکل از کارت هست یا نه.