How To Reinstall Windows 7 Without Changing Your Personal Settings, Installed Programs & Drivers

Tina Sieber 11-10-2011

reinstall windows 7 without losing settingsWindows has a tendency to accumulate errors and problems over time. While some of this virtual wear and tear can be delayed by rigorous system maintenance and keeping malware at the gate, the time will come when you will be forced to reinstall your system.


A Windows re-installation is a tedious process. It takes time and once the new installation is in place, you essentially start from scratch. Your user files are wiped and have to be restored, programs need to be re-installed, and personal preferences have to be set up all over again. Since the ‘perfect setup’ is a work in progress, driven by all sorts of updates and new gadgets, creating an image of your operating system is a waste of time. And as time goes by, the nightmare will start all over again. Except if there was a way to re-install your operating system and fix system-based issues without losing all your stuff….

Starting with Windows XP, Microsoft has been offering what is called a “non-destructive reinstall ability” for Windows. It is a way of re-installing the operating system without changing user data, settings, and preferences, including installed programs and drivers. After re-installing Windows with this method, you will log onto your account as if nothing had happened, except that all system files were ‘updated’, which almost equals a fresh installation.

Preface: What You Need

  • Windows 7 installation DVD.
  • original 25-character product key.
  • minimum 12,869MB free space on system drive (C:)
  • bootable Windows 7 installation.

If you don’t have an installation DVD for your edition of Windows 7, it’s OK to borrow one or create it with a torrent download. The important thing is that you currently run a genuine copy of Windows 7.

The product key can typically be found on a sticker on your computer. If you can’t find and don’t know your original product key it is not OK to use another product key! You can, however, recover all product keys of your present installation, including the operating system itself, using Bean KeyFinder or one of the tools listed in this article: 3 Ways To Recover Serial Numbers In Windows 3 Ways to Recover Serial Numbers in Windows Looking for your Windows product key? Lost the serial number of a premium software? We show you how to recover your license keys with free tools. Read More .

For the non-destructive installation to work, you must be able to boot into Windows 7 full, not Safe Mode. I also highly recommend to prepare a backup of your data before you attempt to re-install.


Step 1: Uninstall Service Pack 1

Running SP1 can cause issues when performing a non-destructive re-installation with an installation DVD that does not contain SP1. It is thus recommended to uninstall SP1 before you proceed.

  • Go to > Start > Control Panel > Programs and Features or > Programs > Uninstall a Program.
  • In the left-hand side click > View installed updates
  • Select > Service Pack for Microsoft Windows (KB976932) and click > Uninstall.

reinstall windows 7 without losing settings

Step 2: Run Setup In Compatibility Mode

This step is optional. You can skip it and return to it if needed. The pre-installation compatibility report might not let you proceed due to the following issue:

Your current version of Windows is more recent than the version you are trying to upgrade to. Windows cannot complete upgrade.

To avoid this error :

  • Go to > Computer, right-click on the installation DVD and select > Open.
  • Right-click on > setup.exe and choose > Properties.
  • Switch to the > Compatibility tab and check > Run this program in compatibility mode for: and pick > Windows Vista (Service Pack 2) from the list.
  • Click > OK and double-click > setup.exe to launch the installation.

reinstall windows without losing everything

Step 3: Run Setup

When you run the setup.exe from the DVD, Windows will ask whether you want to allow the program to make changes to your computer. Click > Yes to proceed.

reinstall windows without losing everything

In the next windows click > Install now to start the installation.


reinstall windows without losing everything

Windows setup will now proceed with copying temporary files and running a compatibility check. When presented with the first selection screen (see screenshot below), select the first option to > go online and get the latest updates, then > accept the license terms and press > Next to continue.

how to reinstall windows 7

Key Step: Select Upgrade Installation Type

Select > Upgrade when asked which type of installation you want.


upgrade windows 7

You are not actually upgrading, but rather installing the same operating system over your existing installation. However, since you selected upgrade, your files, settings, and programs will be left alone. The installation takes about an hour and will re-boot your system several times during the process.

how to reinstall windows 7

Finally, you will be asked to enter your product key and after going through a few basic settings and re-starting Windows one more time, you will finally be able to log into your refreshed old account.

how to reinstall windows 7

When you first log into your account, you will also be asked to activate your account. Do this immediately to prevent restrictions.

Aftermath: Run Updates, Upgrade Internet Explorer & Install SP1

Several things were changed when your system was upgraded. You were reverted to the Service Pack version on your installation DVD (likely pre-SP1) and Internet Explorer was downgraded to version 8 (in case you were running IE9).

Go to > Start > Control Panel > Windows Update or > System and Security > Windows Update and click on > Install updates. You will have to reboot and go through this process several times to bring your system up to date. If you don’t see any updates, click on > Check for updates on the left-hand side.

reinstall windows 7 without losing settings

The entire update procedure took me around 90 minutes, which was a lot faster and a lot less hassle than a complete re-installation. What are your experiences with the process?

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  1. Mukona
    September 6, 2019 at 3:21 pm

    Just after clicking install Windows it says "windows setup cannot find a location to store temporary installation install windows make sure that a partition on your boot disk has at least 693 mb of free space" but then I habe more than 100 GB free space on this drive

  2. Mike Smith
    May 17, 2018 at 1:17 am

    Frustrating! Tried this and everything else I can find and nothing Microsoft or anyone else published works!!! I have Win 7 ultimate upgrade that now does a slow bootloop.. and all the tools and upgrade options including dos commands do not work.. I have not tried an install but am afraid it wont work either. Problem is I have several unique software applications that will only run on Win 7.. (thanks Bill Gates)

  3. Anonymous
    July 27, 2015 at 9:14 am


    I have Windows 7 Home Premium and the article mentioned that for step 1to Uninstall SP1, my version of Windows 7 does not have Service Pack 1, so should I proceed to Step 2?


    • Tina Sieber
      July 27, 2015 at 5:23 pm

      Hi Anna,

      Yes, if you never installed SP1 or if you can't find it installed as described above, you can proceed to Step 2. Good luck!

  4. Anonymous
    July 13, 2015 at 7:43 pm

    Tried this a number of times and it does't work. Using Windows 7 professional 64bit Dell OEM. When set to compatibility mode and run as an administrator the upgrade does the check and comes back with an error that you can't upgrade Windows 7 Professional with Windows 7 professional. Disk I am using is the original I used to do the original install. Need help. Have tried all three vista options..

    • Jane
      November 24, 2016 at 8:41 am

      "comes back with an error that you can't upgrade Windows 7 Professional with Windows 7 professional"

      My experience, as well....but no answers forthcoming?

      Why not?

      • Tina Sieber
        November 24, 2016 at 10:07 am

        The above article is five years old and the author is no longer using Windows 7. Hence, she cannot reproduce the error. Sorry! I would recommend to ask the question in a forum.

  5. Anish
    April 20, 2015 at 11:36 am

    Hi, can I upgrade/downgrade my PC in this way so that I can keep my installed programs??

    Thank You

  6. John
    March 10, 2015 at 6:02 pm

    Thank you, Tina! After 30 years with Windows systems, still learning these idiosyncrasies. As it happens, I did not need to reinstall Win 7, but discovered I had to install new Intel Rapid Storage drivers, after having replaced 2 Western Digital 500 G hard drives (RAID array). Not a word on Microsoft site about this; just stumbled on it when trying to solve broken Update function. Update now at least works, tho it won't install update for .NET Framework; at least I'm now comfortable waiting for Win 10. Great site . Hope you can keep it up, and cover Win 10 in the future.

  7. John
    March 6, 2015 at 6:54 pm

    Will this reinstall technique work if your current Win 7 Update is broken? That would be my reason for doing it, but if I am going to have to use the Update loader during the process, I won't be able to, assuming the reinstall process relies on the (broken) Update program that is already installed. Would it work if I skip the Update option during the reinstall?

    Thank you.

    • Tina
      March 10, 2015 at 9:49 am

      If you have Windows 7 installation files from prior to Service Pack 1, you will have to remove SP1, otherwise you might run into issues. That can be done through Programs and Features in the Control Panel (> Uninstall a program > View installed udpates > select SP1 and > Uninstall) prior to the installation.

      If you cannot uninstall SP1 prior to running this "Windows 7 Upgrade" installation, you should try to find installation files that include SP1 and hope that this circumvents the issue.

      Other than that, the setup should work. Besides, once the system is being upgraded, all processes run from the installation files, not your broken Windows installation.

      You'll also want to use Windows Update to re-install SP1 and update the system once your upgrade installation has completed. Actually, whatever issues you're having with Windows Update now should then be fixed.

      Please let us know how it went! Thank you.

  8. Oldgolfer31
    October 20, 2011 at 11:47 am

    Tina-I do not have an original CD/DVD of my Win 7 Pro-it did not come with one. How do I reinstall without? Or how can I make one?

    • Tina
      October 20, 2011 at 10:04 pm


      the article that answers your question will be published tonight. Check back in a few hours and it should be live. It's called
      When Is It Ok To Borrow Or Download A Windows Installation Disk.

  9. Gathrb48
    October 11, 2011 at 6:43 pm

    My PC was originally a Vista OS which I upgraded to Windows 7.  Will this process work for me, or will I essentially have to reinstall both Vista and Windows 7?

    • Rdiorio25
      October 12, 2011 at 5:00 pm

      @gathrb48: if you can obtain a windows 7 full installation disc this process will definitely work for you...however, I'm not sure if it would work from the upgrade only disc.

      Give it a shot though in theory it is possible, just don't forget to back up your data.

    • Tina
      October 12, 2011 at 8:10 pm

      Agree with what Rdiorio said. If it doesn't work, the upgrade will probably just quit and return to your desktop. I second making a backup.

  10. Leovyner
    October 11, 2011 at 6:28 pm

    this solution may not work for me,

    I`m having problems with codec as they`re having complication due to several codec pack installed before.tried unregister, but didn`t work.
    and I`d have at least 2 codec pack as one of them is 8-bit codec, and the other is 10-bit codec so that I can encode my videos.
    am getting bluescreen too.

  11. Kevin Crosby
    October 11, 2011 at 5:50 pm

    I read somewhere you can do this without un-installing SP-1 IF you have a copy of the DVD with SP-1 ...

    True ?

    • Tina
      October 11, 2011 at 6:24 pm

      Yes, that's true.

      • Roy
        June 26, 2017 at 10:02 pm

        This is what I was looking for!!!

        I must say Tina, your article was very well written, laid out, and easy to understand and follow. That is rare. Most techie people don't know how to communicate technical things as they think non tech people think the same way as they do.

        Thank you.

        • Tina Sieber
          June 30, 2017 at 2:07 am

          Thank you for the feedback, Roy.

  12. SirNubs
    October 11, 2011 at 5:00 pm

    Can you go from a 32 bit version to 64 bit version this way?

    • Tina
      October 11, 2011 at 5:03 pm

      I cannot answer this question with certainty. My guess is that it won't work.

    • Peter
      October 12, 2011 at 12:26 am

      No you cannot. You can only "upgrade" to the same architecture.
      You wouldn't want to do it anyway because all your drivers would be 32 bit and the system would crash as soon as it tried to load any of those drivers.

  13. Justwarm
    October 11, 2011 at 4:41 pm

    sounds good.I will give a try next time.

  14. Schah
    October 11, 2011 at 4:33 pm

    You know reinstalling windows isn't that bad. It's installing all the softwares that takes eternity. Is this method really effective in fixing common windows problems?
    I will give it a try the next time PC needs tidying up. Thanks Make Use of

    • Tina
      October 11, 2011 at 5:05 pm

      I agree, Schah. The installation as such is essentially the same with this method, but you come back to a system that already contains all your programs.

      Since it doesn't update the entire registry, otherwise installed software and user settings would be gone, it certainly won't fix all common Windows issues, like slow computer due to registry overload etc.