i dont think so because my uncle has the same laptop with core duo 1.83 and he hears no noise what so ever.and hes been having it since april i think it was maybe you should send it back to hp and let them figure out the problem.but i have to warn hp customer service is bad i tell you bad!!!
I recently bought a CTO HP Pavilion dv1000t with the Intel Core Duo T2400 (1.83GHz) processor. I am experiencing a high pitched buzzing noise coming from rear-left section of the machine. It is definately not the fan or hard drive. Also, the noise volume is affected by the Power Scheme. When set to "Portable/Laptop" the noise is faint yet noticable, but when the "Always On" setting is applied the volume of the noise increases significantly.
Does two cores = twice the noise?