已经下载了最新的 hp easy start，引导我下载了hp smart，但hp smart永远无法找到usb连接的电脑。 已经花了我很多时间了，辛苦尽快解决下。 I have downloaded the newest version of HP Easy Start, which led me to download  HP Smart. However, it can never find the printer through the connection of USB. This has cost me too much time, please help me solve the problem, thank you!