What are the specific errors you're experiencing?

Have you tested the same USB drive in another computer and confirmed it's still working properly? The reason for asking this is because this rarely if ever has something to do with the OS. Plus you mention *"unable to copy audio or video files"... Can you copy other file types? Unlikely if you can't format it either. So, why mention those types specifically? This all reads as written by person without basic experienece with computers, sorry to say.

Check the USB drive: Make sure there are no physical damages to the USB drive and that it's functioning properly. Try connecting it to a different USB port on your computer or try using it on another computer to see if the issue persists.

Update USB drivers: Ensure that your computer's USB drivers are up to date. Outdated drivers can sometimes cause compatibility issues with USB devices. You can usually update the drivers through your computer manufacturer's website or using Windows Update.

Scan for malware: Run a thorough scan of your computer for any malware or viruses. Malicious software can sometimes interfere with USB functionality. Use a reputable antivirus program to scan your system and remove any detected threats. Tell Happy Star

Try a different USB cable: If you're using a USB cable to connect the drive, try using a different cable to see if that resolves the problem. Faulty cables can prevent proper data transfer.

Check file system compatibility: Ensure that the file system on your USB drive is compatible with your operating system. Windows typically supports the NTFS and FAT32 file systems. If your USB drive uses a different file system, you may need to format it to a compatible format.

Format the USB drive: If none of the above steps work, you can try formatting the USB drive. Keep in mind that formatting will erase all data on the drive, so make sure to back up any important files before proceeding. Right-click on the USB drive in Windows Explorer, select "Format," choose the desired file system (e.g., NTFS or FAT32), and follow the on-screen instructions to complete the formatting process.