The new hard drive and recovery disks showed up this morning. I installed the new hard drive, turned the PC on and was welcomed with the same noise as before that inspired my call to HP tech.

I checked both fans and neither is causing this noise. It sounds sorta like a rotational vibration induced noise and I can’t find the source. Two hours on the phone to HP and they want to send me a box for me to return the PC to them to for repair.

Is there anything else in this PC that can be a noise source? It an HP Pavilion a1767c.