This article explains possible reasons for an Android device to display a black screen with an Android logo in the corner

A black screen with a small upside-down Android logo in the upper corner typically indicates that the device has entered the bootloader or recovery mode. This can occur due to various reasons, such as:

1. System Update Failure: An update may have failed or been interrupted, causing the device to enter a recovery mode.
2. Corrupted System Files: Essential system files may be corrupted, preventing the device from booting normally.
3. Manual Entry into Recovery Mode: The device may have been manually booted into recovery mode for troubleshooting or firmware updates.
4. Hardware Issues: There could be hardware-related problems causing the device to fail to boot properly.

To resolve this issue, you can try the following steps:

1. Restart the Device: Sometimes, a simple restart can resolve the issue. Hold down the power button until the device powers off, then turn it back on.
2. Access Recovery Options: If the device is in recovery mode, you may have options to reboot the system, perform a factory reset, or apply updates. Navigate through these options using the volume and power buttons.
3. Perform a Factory Reset: If other solutions fail, a factory reset might be necessary. Be aware that this will erase all data on the device.
4. Send unit in for Repair: If you are unable to resolve the issue, it may be necessary to send the unit to Elo for repair/replacement under the warranty. Visit the Service Portal to obtain an RMA: https://portal.elotouch.com/Services