Back up your important files
Check that your PC meets Windows 10 requirements
Make sure you have a valid Windows 7 license
Download the Windows 10 Media Creation Tool from Microsoft
Run the Media Creation Tool
Select Upgrade this PC now
Choose whether to keep personal files and apps
Follow the on-screen prompts
Wait for Windows 10 to download and install
Restart the PC when prompted
Complete the Windows 10 setup
Install Windows updates
Reinstall any missing drivers or apps