No, Windows 11 cannot be installed on every computer as it has specific system requirements. Some key requirements include:
A compatible 64-bit processor with at least 1 GHz and 2 or more cores
At least 4 GB RAM
Minimum 64 GB of available storage
A DirectX 12 compatible graphics device with WDDM 2.x
A display with a minimum resolution of 720p, larger than 9 inches diagonally, with 8 bits per color channel
UEFI firmware with Secure Boot capability
TPM (Trusted Platform Module) Version 2.0
PCs that do not meet these requirements cannot run Windows 11. Microsoft offers a tool called "PC Health Check" to check if your current PC is compatible with Windows 11.