[quote="Rick16":1yry02h4][quote:1yry02h4]It's impossible in Construct, you need specialist tools to make your own OS.[/quote:1yry02h4]
Impossible, impossible? It is indeed possible, consider a system that opens above the windows, as a portable system with simple functions, I've done this in the construct.[/quote:1yry02h4]
No, that's not what an operating system is. Windows is an operating system and the application you have just described is still running on the Windows operating system. To write a true operating system, you have to start by writing a bootloader in assembler, for example, then making device drivers for all the devices that could possibly attach to the computer, etc...
If the question is "can I make a computer organiser" or "system manager" or something that runs on top of Windows, then the answer is yes, nothing's stopping you. But that is something completely different to an OS!