This error occurs if you try to install 64-bit OS into 32-bit PC.
Before installing 64-bit OS, make sure that your PC is 64-bit capable including motherboard and processor.
If you get this error even though if your processor is 64-bit capable then your motherboard doesn't support the OS, especially in laptops.
To avoid this error you must install 32-bit OS / recommended 32-bit OS like