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Sometimes the cursor moves erratically,

May 26, 2020
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my laptop is Dell 7510
i7-6820HQ
RAM 16GB
SSD 256
Sometimes the cursor moves erratically, can it be from the AC adapter it's not original, i try it on another laptop (Dell e5470 14") the cursor goes crazy but on 3rd laptop, it works well
so I can't decide it from the adapter or from where
 

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