EM Digital Group

Have your Windows 8.1 Pro product key ready.

Back up all important files before performing a clean installation.

For a clean installation, you need a USB drive with at least 8 GB of storage. The USB drive will be erased.

Keep a network driver available in case Windows does not detect your network adapter after installation.

Choose the 64-bit version when your computer supports it.

- Have your Windows 8.1 Pro product key ready.
- Back up all important files before performing a clean installation.
- For a clean installation, you need a USB drive with at least 8 GB of storage. The USB drive will be erased.
- Keep a network driver available in case Windows does not detect your network adapter after installation.
- Choose the 64-bit version when your computer supports it.

___________________________________________________________

Activate an existing Windows installation

Press Windows key + X, select System, and then select Change product key.

Enter the product key you received after purchase, and then select Activate.

Alternative method: Press Windows key + R, enter slui 3, press Enter, enter your product key, and then select Activate.

Warning: Creating the bootable USB drive erases everything currently stored on that drive. Deleting existing Windows partitions during installation also removes the data stored on those partitions.

Download the version that matches your computer:

- <a href="https://lisenshuset.sharepoint.com/:u:/s/EMDigitalGroupAS/IQAWb3AuFImTTqRz3bMxd-zdAXXOPJbxicGPw8rHnavT0FA?e=j9aGoQ" rel="nofollow noopener noreferrer" target="_blank">64 bit</a>
- <a href="https://lisenshuset.sharepoint.com/:u:/s/EMDigitalGroupAS/IQBRzSxB-a-bQonGIkwnjjPAAag9sVuFh5BEpw-kqS8_Ob0?e=lMEkp7" rel="nofollow noopener noreferrer" target="_blank">32 bit</a>

Step 2: Create a bootable USB drive with Rufus

Connect an empty USB drive with at least 8 GB of storage.

Choose GPT (UEFI) for a UEFI-based computer or MBR (Legacy/BIOS) for an older BIOS-based computer.

Select Start and confirm that the USB drive can be erased.

1. Connect an empty USB drive with at least 8 GB of storage.
2. Open Rufus and select the USB drive.
3. Select the downloaded ISO file.
4. Choose GPT (UEFI) for a UEFI-based computer or MBR (Legacy/BIOS) for an older BIOS-based computer.
5. Select Start and confirm that the USB drive can be erased.

Step 3: Start the computer from the USB drive

Open the boot menu. The key is often F12, Esc, F9, or F10, depending on the computer manufacturer.

1. Restart the computer.
2. Open the boot menu. The key is often F12, Esc, F9, or F10, depending on the computer manufacturer.
3. Select the USB drive.

Select Custom as the installation type.

Optional: Delete the old Windows partitions if you want to remove the existing installation and its data.

Select Unallocated space, and then select Next.

1. Select Install now.
2. Select Custom as the installation type.
3. Optional: Delete the old Windows partitions if you want to remove the existing installation and its data.
4. Select Unallocated space, and then select Next.

After Windows starts, install the required drivers. Install the network and chipset drivers first, and then run Windows Update.

Open System, select Change product key, and enter your product key. You can also press Windows key + R, enter slui 3, and press Enter.

If activation fails, take a screenshot of the full error message and error code. Include the screenshot when contacting support so the team can assist you more quickly.

For help with installation, your product key, or activation, contact our support team via email <a href="mailto:post@lisenshuset.no" rel="nofollow noopener noreferrer" target="_blank">post@lisenshuset.no</a> and we will be glad to assist you. Our customer service is open Monday–Friday from 9:00 AM to 5:00 PM.

This guide explains how to activate Windows 8.1 Pro on an existing installation or perform a clean installation using a bootable USB drive.

How to install and activate Windows 8.1 Pro

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How to install and activate Windows 8.1 Pro

Before you begin

Activate an existing Windows installation

Step 1: Open the activation settings

Step 2: Enter your product key

Perform a clean installation

Step 1: Download the Windows 8.1 Pro ISO

Step 2: Create a bootable USB drive with Rufus

Step 3: Start the computer from the USB drive

Step 4: Install Windows

Step 5: Install drivers and updates

Step 6: Activate Windows

Troubleshooting activation

Contact technical support