Question Lenevo Idepad 330s TV static screen when on battery [HELP]

Jan 6, 2021
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I have a Lenovo IdeaPad 330s laptop purchased a few months ago. It works fine but when I disconnect the AC cable, the screen flickers and immediately goes to a grainy TV static like display. The only way to restore is to plug-in AC back and sleep/wake the scene again. help, please.
 

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