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How to reinstall the Win7 system?Champions League Windows 7 (abbreviated as Win7) is one of the computer operating systems developed by Microsoft, which was officially launched in October 2009. Win7 is deeply loved by the majority of users, but with the launch of Windows 10, many users choose to upgrade the system. Other users may encounter some problems and need to reinstall the Win7 system. This article will share the reinstallation method of the Win7 system, hoping to help you. Step 1: Backup data. Reinstalling the Win7 system will empty all the data on the hard disk, so be sure to back up important data, such as documents, photos, videos, etc., before reinstalling. StepSecond: Get the Win7 system image. The Win7 system image can be downloaded from Microsoft's official website, and can also be installed with the existing installation CD or USB flash drive. If you are not sure where to get the mirror image, you can search for relevant resources on the Internet, but you still need to be careful to protect the security of your computer. Step 3: Make and install a USB flash drive or CD to mirror the Win7 system to install a USB flash drive or CD. In fact, the production method is extremely simple. Under Win7 system, you can use the Windows USB/DVD download tool; under other operating systems, you can use UltraISO, Rufus and other software to produce. When making a USB flash drive, you need to use a USB flash drive of more than 8GB, and make sure to back up the data to avoid accidental formatting. Step 4: Enter the BIOSAfter inserting the finished installation USB flash drive or CD-ROM into the computer, you need to enter the BIOS settings to choose to boot from the USB flash drive or CD-ROM. The method is as follows: 1. Turn on the power and press a key (such as F2, F12) to enter the BIOS settings. Two. Search for the boot item and set the preference to USB flash drive or CD-ROM. 3. Save and exit the settings. Step 5: After installing the Win7 system computer and entering the installation interface, follow the instructions to install the Win7 system. If you are installing Win7 system for the first time, you can refer to the following steps: 1. Choose the language, time and currency format. Two. Click "Install" to start the installation process. 3. Read and agree to the terms of use. Four. Select "Custom Advanced" to install. 5. Select the hard disk partition to install the Win7 system. If you need to re-partition, you can perform relevant operations.(Note: This step may lead to data loss. Please remember to back up the data.) 6. Wait for the installation to be completed. 7. Install the driver as needed. Eight. Update Windows according to demand. Step 6: After the above steps, you have installed the Win7 system. Next, you can restore according to the backed-up data, or directly install some commonly used software. The above are the detailed steps to reinstall the Win7 system. I hope they can help you. It should be noted that you need to be careful when reinstalling, especially when partitioning and formatting the hard disk. Be sure to back up important data to avoid unnecessary losses. At the same time, it is recommended to create operations such as restoring mirror images and backup systems in case of emergency.

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