Download the latest BIOS available. Extract the file inside the archive. Before running the file, make sure the battery is fully charged and the device is connected to AC. It may restart several times during the installation. Don't attempt to turn it off until the installation is completed.
There were no new restore points (last was 05/1/18).Today I found out that the problem almost always occurs when there are 2 audio programs are running at the same time (for example spotify and streamio, or spotify and youtube (on chrome)). I found that the crackling sound stops when I close all the programs and restart them..
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