How to delete the previous system when the computer reinstalls the system

Deleting system files can not use the general method to achieve the purpose, you can use the method of installing the system to achieve: when installing the system, the installation interface will appear, there is a formatting item in the interface, select C disk, click formatting, be careful not to choose other disks.

If you don't have a normal system on your computer, but you have an optical drive, you can use a system disc to install it. The method is to press the DEL key when the computer is turned on, and set the [Boot from CD-ROM Drive] as the first boot item in the BIOS interface before running the CD.

After the USB flash drive is inserted into the computer, press the hotkey to start the USB flash drive for installation.

There will be a folder in the system disk, just delete it.

In win+r, open the run, enter msconfig to open the advanced configuration, switch to the boot tab, see if there is an old system in it, and delete it for a long time.

There is a hidden system file on the C drive, open the operating system menu that can see when you boot up, and delete the extra two. If you're not sure which two are redundant, run msconfig and select "Check All Boot Paths" on the tab to find out.

Open My Computer - Properties - Disk Cleanup.

Tick - Temporary File, Error Report File - Thumbnail - OK.

Bottom left of the window - Clean up system files.

Tick - Windows Update, Device Driver Installation, Previous System Installation - OK.

In addition, there are plenty of other cleanup options like system restore points, backup images, etc

When reinstalling the system: PE will prompt you that the system disk is formatted, don't worry, restart after installation, it is the system you installed.

1. First of all, we turn on the computer, click on the computer to find the C drive.

2. Right-click on the C drive and click Properties in the pop-up dialog box.

3. Then we find and click on the Disk Cleanup option on the interface.

4. Then you need to select Clean System Files in the lower left corner of the page.

5. Wait for about 1 minute to let it run in the background.

6. Select all and click OK.

You can delete it as follows:

2. Click Computer - > C Drive Properties - > Disk Cleanup.

1. Passive reinstallation, due to various reasons, such as user misoperation or damage of viruses and Trojan programs, important files in the system are damaged, resulting in errors or even crashes that cannot be started, at this time, the system will naturally have to be reinstalled. Sometimes, although the system is working normally, there is an error from time to time, and it is better to reinstall it than to spend time and effort trying to find it.

2. Active reinstallation, some DIY enthusiasts who like to fiddle with the computer, even if the system is running normally, they will regularly reinstall the system, the purpose is to improve the bloated system, and at the same time let the system work in the optimal state.