ASUS Certified System Troubleshooting 3 — Questions and Answers
Question 1: An ASUS laptop's touchpad stops responding after a Windows update. What is the FIRST troubleshooting step?
- Replace the touchpad hardware
- Roll back or reinstall the touchpad driver from ASUS support (Correct answer)
- Disable and re-enable Bluetooth
- Reset the BIOS to factory defaults
Correct answer: Roll back or reinstall the touchpad driver from ASUS support
Windows updates can overwrite OEM touchpad drivers with generic ones; reinstalling the ASUS-specific driver typically resolves the issue.
Question 2: A user's ASUS NUC shows 'CMOS Checksum Error' at every boot. What is the MOST probable cause?
- Failing SSD
- Dead or weak CMOS battery (Correct answer)
- Incorrect RAM frequency
- Corrupted GPU BIOS
Correct answer: Dead or weak CMOS battery
A dead CMOS battery causes the system to lose BIOS settings and generate a checksum error at every power cycle.
Question 3: During POST, an ASUS motherboard displays 'CPU Fan Error.' The CPU cooler is spinning. What is the MOST likely cause?
- The fan is connected to the wrong header or the RPM is below the BIOS threshold (Correct answer)
- The CPU is defective
- The PSU fan speed is too low
- Windows Defender is blocking fan control
Correct answer: The fan is connected to the wrong header or the RPM is below the BIOS threshold
ASUS BIOS monitors specific fan headers and will trigger an error if RPM falls below the configured minimum or the fan is on an unmonitored header.
Question 4: An ASUS desktop's USB ports on the rear I/O work, but front panel USB ports do not. What is the MOST likely cause?
- USB drivers are not installed
- The front panel USB header cable is disconnected from the motherboard (Correct answer)
- The PSU lacks enough amperage
- The USB controller chip is defective
Correct answer: The front panel USB header cable is disconnected from the motherboard
Front panel USB connectors are routed through a header cable to the motherboard; if unplugged or loose, those ports will not function.
Question 5: A technician is troubleshooting an ASUS system where dual-channel RAM is not being recognized. The sticks are installed in slots A1 and A2. What should be done?
- Enable XMP in BIOS
- Move the sticks to the recommended dual-channel slots (typically A2 and B2) (Correct answer)
- Increase DRAM voltage manually
- Update the GPU driver
Correct answer: Move the sticks to the recommended dual-channel slots (typically A2 and B2)
ASUS motherboards require RAM to be installed in specific paired slots (usually A2/B2) to enable dual-channel mode.
Question 6: A user's ASUS laptop battery charges to 60% and stops. No hardware faults are found. What feature is MOST likely active?
- Battery Fast Charge mode
- ASUS Battery Health Charging set to Balanced or Full Lifespan mode (Correct answer)
- Windows Battery Saver mode
- ACPI power limit throttling
Correct answer: ASUS Battery Health Charging set to Balanced or Full Lifespan mode
ASUS MyASUS Battery Health Charging limits charge to 60% or 80% to extend long-term battery lifespan.
Question 7: Which ASUS BIOS feature should be DISABLED when installing an older operating system that does not support UEFI?
- Intel Virtualization Technology
- Secure Boot and switch to CSM/Legacy mode (Correct answer)
- XMP memory profile
- CPU Power Management
Correct answer: Secure Boot and switch to CSM/Legacy mode
Legacy operating systems require CSM (Compatibility Support Module) and Secure Boot must be disabled to allow non-UEFI boot media.
ASUS Certified System Troubleshooting 3
An ASUS laptop's touchpad stops responding after a Windows update.
What is the FIRST troubleshooting step?