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Windows 8.1 Pro offers a smooth and secure experience for both personal and professional use. If you're setting up a new PC or reinstalling, this guide will walk you through downloading, installing, and activating Windows 8.1 Pro step by step.
Let’s get started.
If you already have an OS installed, back up your files before proceeding.
Only one version of Windows should be installed on a device. Remove older installations to avoid conflicts.
Make sure your system meets these basic requirements:
Processor: 1GHz or faster, 32-bit or 64-bit
RAM: 1 GB (32-bit) or 2 GB (64-bit)
Storage: 16 GB (32-bit) or 20 GB (64-bit)
Graphics: DirectX 9 with WDDM driver
Display: 1024×768 or higher
Internet: Required for updates and activation
Choose the version for your architecture:
You’ll need a tool like Rufus to create a bootable USB or DVD.
Run rufus-3.xx.exe
(no installation required)
Insert an empty USB drive (8GB+)
In Device, choose your USB
In Boot Selection, click SELECT and choose your downloaded ISO
Click Start and wait for completion
* For DVD: Use any disc-burning software to write the ISO file to DVD.
Follow these steps for a clean installation:
Enter BIOS
Turn on your PC and press Del
, F2
, F10
, or Esc
to enter BIOS.
Change Boot Order
Set USB/DVD as the primary boot device.
Save & Restart
Save BIOS changes and restart the PC.
Boot from Installation Media
When prompted, press any key to boot from USB or DVD.
Windows Setup
Select language, time, and keyboard
Click Next, then Install Now
Enter Product Key
Use your Windows 8.1 Pro license key.
Accept License Terms
Check the box and click Next
Custom Install
Select Custom when asked which type of installation.
Choose Drive or Partition
Format or delete old partitions, then click Next
Finish Setup
Follow the on-screen instructions to complete installation.
After installation:
Go to Settings > PC Settings > Activate Windows
Enter your 25-character activation key
Click Activate
Wrong Version? Make sure you installed Pro, not Core
Typo? Double-check your key
⚠️ If none of that works: Please contact our free 24/7 customer support team. Include your order number and a screenshot of any error message for faster assistance using one of the methods below:
Our free 24/7 support team is ready to assist you:
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