How do I find the operating system on my computer?

Select the Start button, type Computer in the search box, right-click on Computer, and then select Properties. Under Windows edition, you’ll see the version and edition of Windows that your device is running.

How do I install operating system on new computer without CD?

Simply connect the drive to your computer’s USB port and install the OS just like you would from a CD or DVD. If the OS you want to install is not available for purchase on a flash drive, you can use a different system to copy a disk image of an installer disc to the flash drive, then install it on your computer.