You'll be removing everything on your computer as part of the Windows 7 clean install in a future step. After the Windows 7 install files are loaded into memory, you'll see the Windows 7 splash screen, indicating that the setup process is about to begin. You don't need to do anything at this point either. Choose the Language to install , Time and currency format , and Keyboard or input method that you'd like to use in your new Windows 7 installation.
Select Next. Select Install now in the center of the screen, under the Windows 7 logo. This will officially begin the Windows 7 clean install process.
Do not select the Repair your computer link at the bottom of the window even if you're completing this clean install of Windows 7 as part of some larger repair project for your computer.
The Repair your computer link is used to start a Windows 7 Startup Repair or perform another recovery or repair task from System Recovery Options. If you're performing a clean install of Windows 7 as a solution to a major problem but have not yet tried a Startup Repair, do that first.
It could save you the trouble of completing this clean install process. The Windows 7 setup process is now beginning. No need to press any keys here—everything is automatic. The next screen that appears is a textbox containing the Windows 7 Software License. Read through the agreement, check the I accept the license terms checkbox under the agreement text, and then select Next to confirm that you agree with the terms.
You should always read "small print" especially when it comes to operating systems and other software. Most programs, Windows 7 included, have legally binding limits on how many computers the application can be installed on, among other limitations. You are not breaking any laws or contracts by reinstalling Windows 7 via this clean install.
As long as this particular copy of Windows 7 is only being operated on one computer, you're OK. In the Which type of installation do you want? Select Custom advanced. Even if you are upgrading from a previous operating system to Windows 7, I highly recommend that you do not follow the Upgrade installation. You'll get better performance with less chance of issues if you follow these clean install steps.
In this screen, you'll see each partition that Windows 7 recognizes. Since a clean install involves the removal of all operating system related partitions, if they exist, we'll do this now. If, and only if, you're installing Windows 7 on a new hard drive, which of course does not have an operating system on it to remove, you can skip directly to Step 15! Windows 7 setup considers partition management as an advanced task, so you'll need to select the Drive options advanced link to make those options available.
In the next few steps, you'll delete the partitions containing the operating system you're replacing with Windows 7, be it Windows Vista, Windows XP, a previous installation of Windows 7, etc. Now that all available drive options are listed, you can delete any operating system related partitions from your existing hard drive s.
Before continuing, please be aware that deleting a partition will permanently erase all data from that drive. By all data I mean the operating system that's installed, all programs, all data saved by those programs, all music, all video, all documents, etc.
Highlight the partition you want to delete and then select the Delete link. Your list of partitions may differ considerably from mine shown above. On my computer, I am performing a clean install of Windows 7 on a computer with a small 30 GB hard drive that has previously had Windows 7 installed.
Many people, for example, have second hard drives or partitions that act as backup drives. That's certainly not a drive you want to be deleting. After deleting the partition, Windows 7 setup will prompt you to confirm the deletion. The message says "The partition might contain recovery files, system files, or important software from your computer manufacturer. If you delete this partition, any data stored on it will be lost. Choose OK. As I spelled out in the last step, please be aware that all the data stored on that drive will be lost.
If you have not backed up everything you want to keep, select Cancel , end the Windows 7 clean install process, restart your computer to boot back into whatever operating system you have installed, and back up everything you want to keep.
To be clear: This is the point of no return! There's no reason to be scared, I just want it to be very clear that you can't undo the deletion of the drive you selected after you choose this OK button. If there are any other partitions that need to be deleted, you can do so at this time. For example, the Windows 7 installation I had on my PC previously created this special MB very small partition to store system data in.
This is most definitely related to the operating system that I'm trying to completely remove from my computer, so I'll delete this as well. Highlight the partition and select the Delete link. As you can see, the partition we deleted in the last step is gone.
It may appear like it's still there but if you look closely, you'll see that that same Just as in Step 12, Windows 7 setup will prompt you to confirm the deletion of this partition. Just click the refresh button to make it show up in the list. Then click Yes to the confirmation in the next window.
If you don't see this it just means that the flash drive or external hard disk you've selected is already empty. You'll see a Status of Formatting for several seconds, followed by Copying files. This part might take as long as 30 minutes, maybe even longer, depending on which edition of Windows 7 the ISO file you have is from, as well as on how fast your computer, USB drive, and USB connection is.
The percentage complete indicator may sit on one or more percentages for a long time. This apparent pause doesn't mean anything is wrong.
The USB drive can now be used to install Windows 7. If you still can't get the flash drive to boot, and you also have a UEFI based computer, see the information at the bottom of this page.
Optional: add an unattend file to automate the installation process. For more information, see Automate Windows Setup. If your image is larger than the filesize limit:. Windows Setup Technical Reference.
Skip to main content. This browser is no longer supported. After this, we recommend following our article to activate your Windows 10 freely.
Activate the Windows 10 is important. Activation can increase the speed of Windows On this step, Which type of installation do you want? All the files, settings and application will remove from choosing this option. On the other hand, if you click on Upgrade instead of Custom, your files and folders will remain there and may your Windows will not clean.
The upgrade option is usually recommended when your previous Windows was also Windows Therefore, we recommend to Choose Custom Option.
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