When I try to open my phone's camera app, it either shows a black screen or an error message. I can't take photos or videos anymore, which is a major disappointment.

Check the permissions granted to installed apps and revoke any that seem unnecessary or suspicious.

Install and run a reputable antivirus/anti-malware scanner on your tablet to check for and remove any threats.

Do not disconnect the tablet or interrupt file transfers while they are in progress.

Always allow apps to close completely and ensure the tablet is shut down properly before powering it off.

If the corruption is linked to a specific app, clearing its cache and data might resolve the problem (note: this may delete app settings).

Ensure your tablet's OS and all relevant apps are updated to the latest versions, as these often include bug fixes.

A simple restart can often resolve temporary software glitches that might be causing file issues.

Immediately back up any recoverable data and consider replacing the SD card or seeking professional repair for internal storage issues.

Use built-in diagnostic tools or third-party apps to check the health of your tablet's storage. If using an SD card, test it on another device.

As a last resort, a factory reset will remove all data and apps, including any potential malware.