I suggested to them to send me the heatpipes and fans so i could change it myself but they said, if i do that i will loose warranty so I returned it and ordered another one at amazon and sees if it has the same whining noise. One technician said yes its normal another one said its not normal and i should send in. Microsoft customers have also had to deal with audio 'difficulties' in the past, with Windows 10 audio problems affecting gamers in September 2019 and Windows 10 issues causing audio to no longer work after system updates.Thanks for your reply, I also talked to lenovo and the also were not sure if the whining sound is normal or not.
In December 2020, the company removed two more update blocks associated with Conexant audio driver issues causing BSOD crashes. These issues impacted computers with Conexant ISST audio drivers and Conexant or Synaptics audio devices and have been under investigation since May 2020, when the first Windversion was released. Microsoft also removed the last remaining compatibility holds, blocking customers from upgrading to Windand 20H2 after fixing Conexant and Synaptics audio driver issues, causing errors and problems while updating.