Restart your computer > press computer’s BIOS key, usually, it should be Esc/ Delete/ F2 (you can confirm the BIOS key by checking the computer’s product page) > keep pressing the key until you see the BIOS screen. After the downloading, plug in your USB flash drive and copy the downloaded ISO file to it.ġ. Enter your product key to verify > confirm the language > click either 64-bit Download or 32-bit Download.Ĥ. Download Windows 7 from the Microsoft page. Or you can also use Command Prompt to help you have a check: Run Command Prompt as administrator > type “ wmic path softwarelicensingservice get OA3xOriginalProductKey” and press Enter.ģ. For a laptop, you can find the 25-character key on the bottom of your computer. Click Start > type 'system' in the search box > click System Information to check it.Ģ. Replace the “ x” with the drive number of the USB flash drive where you can find in the “list disk” command.ġ. Enter the following commands one by one and wait for each step to complete. Insert the USB flash drive, run Command Prompt window as an administrator.ģ.

It will need your Windows 7 product key and a blank USB flash drive. Here in this part, you will learn the detailed steps to install Windows 7 without CD. Now you have backed up the important computer data, just check the following part to see how to install Windows 7 without CD or USB. Choose the destination path to save the backup image and click Start Backup.

Click Add File or Add Folder to choose the data you want to backup. Click Backup and choose one option to continue. Run the tool and plug in your USB drive if you want to save the backup to it. And you can save the backup image to USB hard drive, external hard drive, or network. It can help back up your system, files, hard drive, and partition. To keep data safe, you can try one free PC backup tool named AOMEI Backupper Standard. You can make a backup for applications or important files like your family photos in advance to avoid disaster. It’s recommended to backup computer because the reinstallation will erase all the data. How to reinstall Windows 7 without CD or USB? Preparation: Backup important data in advance Or if you do not want to use the USB for whatever reason, you can still find solution about how to reinstall Windows 7 without USB in this guide. So is it possible to reinstall Windows 7 without CD? Well, the answer is Yes. Or there is no built-in CD/DVD drive for your laptop to run the media. However, the case is that you do not have a Windows 7 installation disc at hand. Many Windows 7 users would like to reinstall the operating system when the Windows operating system runs into any problem because it can help bring your computer back to normal in most cases. Why do you want to reinstall Windows 7 without CD or USB?

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