A user complains of a 'grinding noise' coming from their PC whenever it is running tasks that are not intensive. After opening the case and observing no visible damage or loose parts, what should be the technician's NEXT step?
Advise the user to stop using heavy applications entirely
Upgrade the PC to use a Solid State Drive (SSD)
Replace all the PC's cooling fans with heat sinks to solve the issue and prevent further failures in the future
Replace the hard drive as it is the most likely component to make a grinding noise
Look up possible causes and solutions based on the symptom using technical forums and manufacturer support websites
Immediately reset the BIOS settings to factory default