TestOut LabSim A+ Certification Practice Exam

In a troubleshooting scenario where the external monitor works but not the laptop's LCD screen, what could potentially redirect display output?

1. A faulty graphics card

2. The Fn key on the keyboard

3. A damaged LCD connector

4. The display driver software

The correct answer is: The Fn key on the keyboard

In situations where the external monitor functions but the laptop's LCD screen does not, using the Fn key on the keyboard can effectively redirect display output. Many laptops are designed with function keys that allow users to switch between various display outputs, such as the laptop's internal LCD and external monitors. This function can be particularly vital when trying to determine if the laptop's internal display has been inadvertently disabled or switched to an alternate output. When pressed in conjunction with a dedicated function key (often labeled with a monitor icon), the Fn key allows users to toggle between display modes, which may include settings for duplicating the screen, extending the desktop, or using only the external monitor. This feature is a convenient way to troubleshoot display issues, as it can quickly clarify whether the problem lies with the internal screen itself or if it's a result of misconfiguration of display settings. The identification of the specific issue through the keyboard shortcuts simplifies the troubleshooting process before considering hardware issues or driver problems. It's essential to check this functionality first when a laptop screen appears to be inactive, as there's a chance the internal display hasn't been turned back on in a multi-monitor setup. In summary, using the Fn key to check display output ensures that users consider both software settings and functionality before moving on to