Motherboard Troubleshooting

Correct Answer: PCIe controller

The PCIe controller is the best component to examine first when expansion slots are not recognizing installed cards. Here's why: PCIe controller: The PCIe (Peripheral Component Interconnect Express) controller is responsible for managing communication between the CPU and expansion cards. If this component is malfunctioning, it can prevent the system from recognizing any installed cards in the expansion slots. Other options: CPU socket: While the CPU is crucial for overall system function, it doesn't directly control the recognition of expansion cards. A CPU issue would likely cause more widespread problems. BIOS chip: The BIOS (Basic Input/Output System) does play a role in hardware initialization, but it's not the primary component responsible for recognizing expansion cards. BIOS issues would typically manifest in other ways, such as boot problems. Voltage regulator module: This component regulates power delivery to various parts of the motherboard. While power issues could affect expansion card functionality, it's not the most direct cause of the described problem. In conclusion, the PCIe controller is the most logical starting point for troubleshooting this specific issue, as it directly manages the communication with expansion cards.

Correct Answer: Faulty video card or integrated video

The most likely cause is a faulty video card or integrated video. Other options may cause various issues, but video output is directly related to the video card or integrated video.

Correct Answer: CPU heat sink and fan assembly

The CPU heat sink and fan assembly should be inspected first. Slow performance, excessive heat, and unexpected shutdowns are common symptoms of a malfunctioning or clogged CPU cooling system. If the heat sink is dirty or the fan is not working properly, the CPU will overheat, causing throttling and potential damage. The graphics card could also be a culprit, but the CPU is more likely to cause system-wide issues. The hard drive and RAM are less likely to cause these specific symptoms related to overheating and unexpected shutdowns.