Micro SDHC

I'm using an Asus Zenfone 3 ZE520KL. I want to delete an Android data files leftover because i already uninstall the apps. I tried to remove it by using the default File Manager first but failed, then i tried to use ES File Explorer and it failed too. Then for the suppose to be my last resort...

I bought a MicroSDHC Card (8 GB) a few days ago. I opened it and I saw a folder of many songs. It was not corrupted at that time. I transferred an .exe setup file into the SD Card and the download speed is 4 MB/s. I eject the device with SD Card. And after a few moments, when I plugged the...