@Jessmass
I won't tell you to use a power adapter, but I will suggest using a "different" power adapter to rule out a bad/underpowered/weak adapter. Verify the power adapter is 5volts, and at least 1 amp.
I would also use another USB power cable (micro USB end on device side) to rule out damaged cable.
You didn't mention device model number, so assuming you are using the 2-piece supply with your device.
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