Hi there, I have experienced this issue, sometimes when I'm on windows the laptop freeze for something like 20/30 seconds, also the charger almost constantly make a buzz noise. Some advice? About the charger I saw that there is the same problem with some Lenovo Y530 and they updated the bios to mitigate this issue also they suggest another, and more powerful charger (135w vs 170w). There are any bios update for my model? It needs a more powerful charger? Thank you for your help
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