Question amd gpu doesnt show up when booted with battery

May 25, 2019
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now i got my lenovo ideapad 320 14I-kb for over a year now and i encountered this issue where when i boot up the laptop on battery power, my amd 530 doesnt show up, but when i boot it with the charger, my amd shows up, and whenever i remove the charger, it gives me a video tdr failure screen
any solutions?

PS: it takes a long time after you shut down or boot on charger