As we have commented previously, errors in mobiles with Android system are very common, and the "android.process.media" is well known among them. This is an error mostly caused by some change in the structure of the phone. This usually happens when downloading an improper update or when a ROM (Read Only Memory) is installed incorrectly.
Our first step to solve this problem will be to go to the settings and configuration section and then choose the "Applications" box. Once here we will look for the download app, we will enter and we will take care of clearing the "cache". If this does not work, we will have to prepare to erase the main data memory and then re-deploy the cache.
If none of these steps worked for you, unfortunately we will have to do a hard reset or factory restore to our terminal. This option will make our mobile device return to normal, but not once this is done will all types of files, documents, photos, videos or apps previously hosted on our smartphone be deleted.