Clean Install Windows 7 Professional

Posted on  by admin

Hello everyone,So I only tried the 64-bit version, as that's what I'm in need of, and I can say it appears to be legitimate.

If you make sure to create a BOOTABLE flash-drive, following either of these instructions:Rufus: ISO: you should see it load-up on your system as a Windows 7 installer.However, if you are installing this in a brand-new hard drive, you might run into trouble.

Windows 7 service pack 1 did NOT ship with USB 3.0 support.. so like me, you're (probably) going to find yourself sitting at the Install Screen that says "Choose your preferred Language," and neither your keyboard or usb mouse will work - even if they're wired.I have looked into a variety of workarounds, some people suggest to "disable USB 3.0 mode in BIOS by switching to USB 2.0 compatibility mode [or legacy USB 2.0]), and others say you have to modify the ISO file.

I'm going to be attempting the latter since by the end of this, I will be having a tri-boot system, and don't want to mess anything up for the other OS'.Here are two sources for, and two ways of, modifying the drivers on the ISO - one is through command-line, another is through faking a C:\ directory WIM mount.Command line:;\WIM\MOUNT:'ll try to report back if this thing lets me edit my posts.

  • (If I manage to get a working ISO out of this which is inclusive of USB 3.0 support, I may re-upload this somewhere else and link to it in a separate comment.
  • Nobody ever said Windows 7 die-hards were gonna go-down easy!!!).

Wait While Windows 7 Is Installed

Choose a User Name and a Computer Name

Most of the time, a Windows 7 clean install means to remove an existing operating system (like Windows XP, Linux, Windows 7, Windows 10, Windows 8, doesn't matter) and replace it with a fresh or "clean" installation of Windows 7.

In other words, it's the "erase everything and start from scratch" process for Windows 7, a procedure referred to as a "clean install" or sometimes as a "custom install."

It's the ultimate "reinstall Windows 7" process. A clean install is often the best way to solve very serious Windows 7 problems, like a virus infection you can't get rid of completely or maybe some kind of Windows issue that you can't seem to solve with normal troubleshooting.

Windows VersionWindows 7 Ultimate ISO
Size5.5 GB
Service PackSP1
Windows VersionWindows 7 Professional ISO
Size5.5 GB
Service PackSP1

As of January 2020, Microsoft is no longer supporting Windows 7. We recommend upgrading to Windows 10 to continue receiving security updates and technical support. Performing a clean install of Windows 7 is also usually a better idea than upgrading from an older version of Windows.

Wait for Windows 7 to Connect to the Network

Since a clean install is a true start over from scratch, you don't risk inheriting any buggy situations from your previous installation.

To be 100 percent clear, this is the right procedure to follow if:. You want to erase whatever you have and install Windows 7.

You want to reinstall Windows 7. You want to install windows 7 on a new hard drive.

This guide is broken into a total of 34 steps and will walk you through every part of the Windows 7 clean install process.

  • Let's get started..
  • The steps and screenshots shown in these steps refer specifically to Windows 7 Ultimate edition but will also serve perfectly well as a guide to reinstalling any Windows 7 edition you may have, including Windows 7 Professional or Windows 7 Home Premium.
  • Microsoft has changed the clean install process for every new Windows release.

If you're using Windows 10, 8, Vista, etc., see How Do I Perform a Clean Installation of Windows? for links to specific instructions for your version of Windows.

The most important thing to realize before performing a clean install of Windows 7 is that all of the information on the drive that your current operating system is installed on (probably your C: drive) will be destroyed during this process.

That means that if there's anything you want to keep, you should back it up to a disc or another drive prior to beginning this process. One quick way to back up the list of programs you have on your computer is with the CCleaner tool.

It doesn't back up the actual program data but simply a list of what's installed so that you don't have to remember every program name.

You should also locate the Windows 7 product key, a 25-digit alphanumeric code unique to your copy of Windows 7.

If you can't locate it, there are tools you can use to dig it up, but this must be done before you reinstall Windows 7.

Choose a Network Location

If Windows originally came preinstalled on your computer (i.e. you did not install it yourself), your product key is probably located on a sticker attached to the side, back, or bottom of your computer's case.

This is the product key you should use when installing Windows 7. When you're absolutely sure sure that everything from your computer that you want to keep is backed up, proceed to the next step.

Keep in mind that once you delete all of the information from this drive (as we'll do in a future step), the action is not reversible!

BrandBoot Menu Key
LenovoF8, F10, F12

To begin the Windows 7 clean install process, you'll need to boot from the Windows 7 DVD if you're using a Windows 7 DVD, or boot from a USB device if your Windows 7 installation files are located on a flash drive or other external USB drive.

Motherboard Brand
Boot Menu Key
ASRockF8, F11

See our Windows Installation FAQ if you have Windows 7 as an ISO image that you need on a flash drive or disc, or a Windows 7 DVD you need on a flash drive.

Restart your computer with the Windows 7 DVD in your optical drive, or with the properly configured Windows 7 USB flash drive plugged in.

Watch for a Press any key to boot from CD or DVD.. message similar to the one shown in the screenshot above.

If you're booting from a flash drive, the message might be phrased differently, like Press any key to boot from external device...

Press a key to force the computer to boot from the Windows 7 DVD or USB storage device.

If you do not press a key, your computer will attempt to boot to the next device in the boot order, which is probably your hard drive.

If this happens, chances are your current operating system will boot. If your existing Windows installation begins to boot or you see a "No Operating System Found" or "NTLDR is Missing" error here instead of the screen above, the most probable reason is that your computer is not set up to boot first from the correct source.

To correct this problem, you'll need to change the boot order in BIOS to list the CD/DVD/BD drive, or External Device, first.

It's perfectly fine if, instead of the screen above, the Windows 7 setup process begins automatically (see the next step).

If this happens, consider this step complete and move on! You don't need to do anything at this point but wait for Windows 7 to finish loading files in preparation for the setup process.

No changes are being made to your computer at this time. Windows 7 is just temporarily "loading files" into memory for the setup process.

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 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? window that appears next, you're offered the choice of Upgrade and Custom (advanced).

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.

Show the Windows 7 Advanced Drive Options

Select the Install Now Button

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.

Wait for Windows 7 to Prepare Your PC for First Use

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.

Wait for Windows 7 to Check Your PC's Video Performance

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.

Delete Other Operating System Related Partitions

that might be on that particular drive. 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.

If you have multiple hard drives and/or multiple partitions on those drive(s), take great care in confirming that you're deleting the correct partition(s).

Delete the Partition Windows Is Installed On

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.

Wait for Windows 7 Setup to Begin

If you delete this partition, any data stored on it will be lost." 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.

Choose the Correct Time Zone, Date, and Time

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 100 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.

Plan Your Windows 7 Clean Install

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 29.9 GB space is now described as Unallocated Space, not as a partition.

Just as in Step 12, Windows 7 setup will prompt you to confirm the deletion of this partition.

Select OK to confirm. Just as before, please be aware that all the data stored on this particular drive will be lost. As you can now see, all the space on the installed hard drive is unallocated.

No partitions exist on this computer. The number of partitions displayed and whether those partitions are unallocated portions of a hard drive, previously partitioned spaces, or previously formatted and blank partitions, will depend on your specific system and which partitions you deleted in the last several steps.