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11. John is using a TV tuner card on his computer. On starting the TV tuner application, he is able to get good video but no audio at all. However, he is able to play music from the audio files stored on his computer. Which of the following could resolve this issue?
12. A user complains that his wireless mouse moves erratically when he is trying to perform any actions using his mouse. Which of the following should he check for before proceeding to troubleshoot his mouse for hardware/software issues?
13. Mary is switching ON her computer after a couple of weeks. She hears a set of continuous beep codes, and the computer does not start. What could be the most likely cause?
14. A client asks a technician to add a DVD+R burner to a computer. The technician does this and successfully tests the drive. Three weeks later, the client calls and says that the burner is no longer working. The technician learns that the drive reads CDs and DVDs but will no longer burn DVDs. What is the first action that the technician should take?