i dont know then, ask the company support or send it to service
can be something wrong inside your monitor or laptop, cant think of anything else what could cause it
if you go to nvidia control center, make sure to select a resolution under PC, not anything else, then choose 144
another post on this had a response with this answer, could work for you too
https://uk.hardware.info/product/129445/packard-bell-easynote-ts11-hr-043/specifications quick google search showed this, not sure if its the exact model
try sending the audio from your game to your headset from your game settings by changing audio source or whatever its named from speakers to headphones
Depending on what you want to do with it. It's pretty new so it will last 5 years easy with gaming and productivity, 10 years max if you want to use it as long as possible.