Most noise is from a bad or old fan with dust build-up. Remove or open the clam shell case(yours?) and see where the noise is coming from. Now is a good time to inspect as well as clean the innards. The power supply is another fan source but any fan can be a noisy one. Also, check to see if any *reasonace* from metal vibrates the hum or similar, if so, tighten or place some wieght there to help control reasonce. -----Willy
I have a HP XE783. It has always made this really annoying loud humming noise. Does anyone know what it is and how to stop it? I was thinking it may be the fan???