去除DELL D620主機闆報警聲

1. 點選 My Computer > Properties > Device Manager > View(Menu) > Show hidden devices
2. 展開 Non-Plug and Play Drivers
3. 右擊 BEEP > Properties
4. Type 字段值選擇Disabled
5. 點選OK
6. 重新啟動計算機

轉載于:https://www.cnblogs.com/joshuali/archive/2009/08/28/4339106.html