Buka menu Start. Tikkan "disk cleanup" pada menu pencarian. Klik aplikasi "Disk Cleanup". Tandai setiap kotak pada judul "Files to Delete". Klik "OK", kemudian konfirmasi pilihan dengan mengeklik tombol "Delete Files". Buka kembali menu Start, kemudian tikkan "defrag" pada bilah pencarian. Klik opsi "Defragment and Optimize Drives". Pilih diska utama pada jendela program Defrag. Klik "Optimize". Cobalah pindahkan berkas-berkas ke ruang penyimpanan eksternal.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
This is in the lower left corner of your screen. You should see an app appear at the top of the Start screen. Disk Cleanup is a standard utility on an Windows computer; it rids your computer of temporary files, processes, and other small bits of information that can slow down your PC's processing speed. This will clear the following items from your computer's cache:  Downloaded program files Temporary internet files Recycle Bin contents Temporary files Thumbnails You may also see other options h