The computer starts, but makes beeping sounds
Beep sounds typically occur when a keyboard key is stuck, a memory DIMM or hard drive cable is not seated properly, or a component on the motherboard has failed. Disconnect the mouse and keyboard, and then restart the computer. If the beeping noise stops, repair or replace those devices.
To find out more information about a specific beep pattern, see BIOS Beep Codes and Error Message Descriptions.
Além disso, teste seu disco rígido e memória: Como testar a RAM e o HDD (Disco Rígido)