Hi, I am using Windows 10 1909 (OS Build 18363.900) on a HP Pavilion - 15cw1026nf (1 month old). Everything was OK a few days ago. The sound works great with external usb speakers. The issue is only with the internal speakers. The sound starts high and then suddenly becomes very low. I have tried to suppress audio enhancements. I have tried to setup multiple updates of Realtek Audio drivers (from HP support site, and from Microsoft catalog update), This updates the audio driver but not the "haut parleur/speaker" driver. I have used HP audio diagnostic and fix tool. The issue is still the same. I am currently using RealTek Audio 6.0.8928.1 (31/03/2020) driver (in "Sound, video and game controllers" set in Device Manager). In the Audio inputs and outputs config in Device Manager, the speaker Realtek audio driver is said provided by Microsoft, 18/03/2019, version : 10.0.18362.1.