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Win7 system reinstall tutorial Win7 system is Hearthstone Arena Tier Listone of the most commonly used operating systems at present, but due to long-term use or some reasons, the system may have various problems, such as crashes, stuttering, etc. At this time, reinstalling the system has become an indispensable operation. This article will provide you with a detailed tutorial on reinstalling the Win7 system. 1. Backup data. Before reinstalling the system, you need to back up important data first. Because reinstalling the system will format the hard disk and empty all the data in the hard disk. USB flash drives, mobile hard disks and other external devices can be used for backup.The backed up data includes personal files, documents, pictures, music, film and television and other data. Two. Download Win7 system mirror image Win7 system mirror image can be downloaded from the official website or third-party download website. It should be noted that it is recommended to download the official original mirror image, preferably from Microsoft's official website and digital signature to ensure the stability and security of the system. 3. There are no optical drives for laptops to make Windows 7 system installation discs or USB flash drives, so here is an introduction to the method of making USB flash drives. First of all, you need to prepare a USB flash drive larger than 4G, format it into NTFS format, and then do the following: 1) Download the Windows 7 USB DVD download tool. This tool can be downloaded for free from Microsoft's official website.2) Run the download tool and select the Windows 7 version that needs to be installed, and then click Next. 3) Select the installed medium, and select the USB device here. 4) Insert the USB flash drive, select the corresponding drive and click to start copying. 5) Wait for the copying to be completed, so that the work of making the USB flash drive is completed. Four. Start reinstalling the system. Insert the made USB flash drive or CD-ROM into the computer. Follow the steps below to start reinstalling the system: 1) Turn on the power, enter the BIOS setting interface, and set the USB or CD-ROM device as the first boot item. 2) Select the "Install" option to enter the installation wizard. 3) If you need to install the language selection, you can choose according to your needs. 4) The terms of the license will pop up. You need to read and agree carefully before installing the system. 5) Enter the disk partition interface, select the partition and format it.It is recommended to choose complete formatting, so that the data of the original operating system can be completely cleared. 6) The system will start to install automatically, and the computer will restart automatically after completion. 7) Enter the initial setting, set the user name and password, as well as network and other options. 5. Driver and system update After reinstalling the Win7 system, you need to install the corresponding drivers and system updates. It can be installed from the built-in drive CD or downloaded from the relevant website. It should be noted that you must download from the official website or other trusted websites, otherwise viruses or drivers may be incompatible. At the same time, the system needs to be updated after the Win7 system is reinstalled, which can ensure the latest security patches and function updates of the system. It can be installed from Windows Update.Summary: The reinstallation of the Win7 system requires careful operation, especially the backup data and the selection of the mirror source. Only under the premise of correct operation can the safety and stability of the system be ensured. I hope the Win7 system reinstallation tutorial provided in this article can help you solve the problem, and also remind you to back up important data and files.

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