Assuming you have found a clean ISO (e.g., "Windows 10 Aqua v3.2" or "Leopard Inspirat"), here is how to prepare your system.
Users look for ISOs instead of manual skins because they want a zero-effort, all-in-one solution. Instead of spending 10 hours patching DLLs and replacing system files, the ISO promises a fully transformed operating system right after the installation finishes.
Custom ISOs sometimes strip out default drivers. Before you wipe your PC, export your current drivers using PowerShell:
Export-WindowsDriver -Online -Destination D:\BackupDrivers
Assuming you download a legitimate-looking Aqua ISO (often 4–6 GB), here is what the typical install involves: