1：无显示，但指示灯亮，或风扇转，有来电的现象 轻内味立·········处理器和主板
2：无显示，但指示征粮操室度相缺露束朝灯不亮或风扇不转，无措来电的现象 电源+主板（电源为重点）
3：无显示，有来电，主机有滴滴滴叫声 ````·········内存、显卡、（通过叫声节奏判断具体谁坏了）
4：有显示，进系统，无声音··········································声卡
5：有显示，进系统，无网·············································网卡
6：有显示，有黑白英文显示····无法进系统·······················硬盘
7：无显示，开机需要等待会，有进系统的声音··················说明是 显示器