P40 lite E is an entry-level Huawei device, launched in March 2020. Equipped with 6.3-inch LCD Display, Triple-Camera array, Huawei Kirin 710F and all of that in just a plastic frame and plastic back, weighting around 176 g (6.21 oz).
Its only downside is because of the conflict with the Chinese market it comes without Google Services, but rather, with Huawei's Mobile services and Huawei AppGallery.
Try making sure that all the cables are connected to the display. If that doesn’t work, make sure the battery is plugged in to the logic board, and your device is plugged in.
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