1. Restart your computer
Try rebooting your device to check if the external hard drive will be read.

2. Check connections
Verify the external hard drive is securely connected to your computer.

3. Update drivers
Go to your computer’s settings and check for any driver updates for your external hard drive.

4. Check hardware pieces
Run a hardware diagnostics check on the external drive to check if any components have failed.

5. Check for compatibility issues
Look into any compatibility issues between the external hard drive and the device it is connected to.