Do you need to reinstall Windows 11 to get a faster and cleaner PC? A fresh installation can resolve slowness, errors, and software problems, and give you a completely fresh system. Here we show you how to reinstall Windows 11 step by step.
Before you start
- Back up files you want to keep
- Make sure the PC is connected to power
- Have the product key ready
- Have a USB flash drive of at least 8 GB if you choose the USB method
Method 1: Reset the PC directly in Windows
This is the easiest way if Windows still starts.
- Open Settings
- Go to System
- Select Recovery
- Press Reset this PC
- Select Remove everything for a clean installation
The PC will restart and the reinstallation will happen automatically.
Method 2: Clean installation with USB
1. Create installation USB
- Download Media Creation Tool from Microsoft
- Insert the USB flash drive
- Select Create installation media
2. Boot PC from USB
- Restart the PC
- Open the boot menu
- Select the USB device
3. Reinstall Windows
- Select language and keyboard layout
- Press Install now
- Select the correct drive
- Delete old partitions for a completely clean installation
Do you need to activate Windows again?
If the PC was previously activated, Windows will often activate automatically when you are connected to the internet. If not, you can enter the product key manually.
If you do not have a license, you can activate it immediately:
After reinstallation
- Run Windows Update
- Install drivers
- Reinstall programs
- Restore backup
A clean PC in under one hour
Reinstallation gives you better performance, fewer errors, and a completely new start. With a valid license, you can activate Windows in a few minutes and use the PC as normal again.