I have an issue with sleep mode on my laptop, how can i fix it?

[Mọt Công Nghệ]

I always plug my laptop in when I use it, and sleep mode works fine both when plugged in and when on battery. But recently, sleep mode didn't work properly when my laptop is plugged in. When my laptop is plugged in and I click "sleep" in the start menu, the laptop simply turns off the screen and mutes the speakers. But about 3-4 weeks ago, when I clicked sleep mode when my laptop was plugged in, sleep mode worked fine. So is there a solution for this problem?

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