Step 1: Right-click drive C and select Properties. The following figure will appear after clicking.

Step 2: Click the "Clean Disk" button in the above figure, and the first picture in the following figure will appear. Don't worry, the second picture will come out later.

Step 3, select the file to delete in the pop-up dialog box. Files downloaded by the system, logs, temporary files and files in the trash can all be deleted here. It is also very important to keep the previous system files, which means that when you installed the system last time, you didn't delete the previous old version of the system, but the computer automatically saved it in the C drive. It's useless, so it's better to delete it, which will save a few g's space The method is to click "Clean System Files" in the above figure, and then select the previous version of system files in the pop-up dialog box to check and delete.

The fourth step is to clean up only a small part. Next, open the 360 security guard, as shown below. Click "Computer Physical Examination-→ Instant Physical Examination".

Step 5: The following picture will appear after the physical examination. At this time, you don't have to worry about "one-click repair", because one-click repair includes a lot, not only garbage, but also software updates and so on. In short, don't use "one-click repair". What you should click is the "Clean" button circled in red in the picture below. This is cleaning up the garbage.

Step six, not finished yet. Don't worry. Next, click "computer cleaning" in the red circle of the picture, and then you will see a big button "one-click cleaning" below. Never click "one-click cleaning", because there are many things you don't want to delete, which may be automatically deleted by one-click cleaning. What you should click on is "cleaning up garbage" circled in red in the picture below.

Step 7: After clicking "Clean up garbage", the computer will automatically scan, but not all scanned products are garbage. Therefore, don't click "one-click cleaning" after scanning. Many things you don't want to delete have also been scanned out. You should check them one by one with the mouse and remove the box in front.

The eighth step, the files you don't want to delete are mainly these kinds: (1) the movies you downloaded with Thunder and PPTV; (2) Your QQ receives files, message records, pictures, etc. A friend sent it to you; (3) The songs, lyrics and MV cache downloaded by music software such as Cool Dog. You can check the rest yourself.

Step 9: Three "cleaning software", "cleaning plug-ins" and "cleaning traces" circled in red in the figure below. These three had better not be cleaned. Because you use a lot of software and plug-ins, don't clean up the traces of surfing the internet, because the user name and password of a website you saved before will be deleted.

10

Finally, to sum up, some people say to reinstall the system. However, after the computer reloads the system, not only will all the previously installed software and history be formatted, but too many reloads will shorten the life of the C drive. This is a common sense that computer professionals know, but laymen don't take the life of the disk seriously.