Yes, you can retain the operating system if you remove all other components except the hard drive.
Yes, you can retain the operating system if you remove all other components except the hard drive.
You can find Windows for 35 dollars on Kinguin. However, it varies based on the version you have installed. OEM is tied to the motherboard.
If OP retained the key... It might have been designed with windows already installed, though we're not sure.
If it's a retail copy of Windows, it should work smoothly. If it's an OEM key—meaning the system came pre-installed with Windows—it won't activate. You can contact Microsoft and explain that the hardware is no longer functioning, they may assist you.