Clean Install on Windows 7 (Tutorial) – A full tutorial on how to clean install on Windows 7. If your Windows 7 PC has been infected by a virus or has slowed down to the point of being unusable, reinstalling Windows is one of the easiest ways to fix software issues, whether it’s running slow or infected by viruses.
Follow the steps below to prepare the destination hard drive and do a clean install on Windows 7.
The first thing you want to have before you start is your Windows 7 PRODUCT KEY. On laptops it is located on the bottom and on store bought desktops it is located somewhere on the computers case.
You need to have a Windows 7 Installation disc. If you don’t have one, you can get the official Windows 7 Service Pack 1 ISO here: http://mirror.corenoc.de and create a bootable usb flash drive. When you download the ISO, make sure you have the correct version of Windows (i.e. Home Premium, Professional, or Ultimate). Also, ensure you have up-to-date backups of all your important files before continuing.
Open the Backup and Restore menu by clicking Start, clicking Control Panel, clicking System and Maintenance, and then clicking Backup and Restore.
If backing up to removable media, connect the external hard drive or insert a blank DVD or CD.
If this is your first backup, click Set up backup and follow the steps in the wizard. If you’ve created a backup before, click Back up now. If you’re prompted for an administrator password or confirmation, type the password or provide confirmation.
**Before moving on to the next step, disconnect non-essential devices from your computer
First, insert the Windows installation disc into your computer’s disc drive and restart your computer. You should see the Windows installer appear. (If it doesn’t, you’ll need to change the boot order in your computer’s BIOS so the computer boots from the CD or DVD drive.)
- Insert the Windows installation disc into the DVD drive.
- Restart your computer.
- When the Press any key to boot from the CD or DVD message appears, press any key to continue.
- Once the Boot menu opens, select CD/DVD drive (listed also as CD-Rom or CD/DVD/CD-RW) and press Enter.
- When Windows 7 Setup appears, confirm the Language, Time, Currency and Keyboard Method fields display the correct settings.
- On the Windows 7 Installation dialog box, click Install Now.
- Review the license agreement, and click I accept the license terms.
- On the Which type of installation do you want? window, click Custom (advanced).
- On the Where do you want to install Windows window, select the largest internal disc as the Primary Partition, then click Next. If the Primary
- Partition shows 0GB free, select Unallocated Space and click Next.
- Your computer will restart.
If you encounter the “Windows cannot be installed to disk # partition #” error when installing Windows follow the steps below:
- At the screen when it ask you to choose which drive to install Windows on, press Shift+F10 and a DOS window would open.
- Type: diskpart
- Type: list disk (you should see only Disk0)
- Type: select disk 0
- Type: clean
- Type: convert mbr
- Type: exit
- Close the DOS window, click on Refresh, select the disk that is listed, and click Next.
Connect your computer to the internet or network
Install critical and recommended Windows updates
Reinstall your applications
Reinstall your third-party hardware and software drivers
Restore your personal files and data from backups