You run windows 10 on your own computer, but now you're using another pc outfitted with an older operating system. If you prefer to use the newest version of windows, though, there's a way to run windows 10 directly through a usb drive.
You'll need a usb flash drive with at least 16gb of free space, but preferably 32gb. You'll also need a license to activate windows 10 on the usb drive. That means you have to either purchase one or use an existing one that is associated with your digital id.
You can then use a windows usb utility to set up the usb drive with windows 10. Once you're done, you'll be able to boot up off the drive to launch windows 10.
The major downside of booting from a usb drive is that windows 10 will run slower than it does off your hard drive. But if you're in a pinch you can at least work with the os and access different apps this way.
Microsoft once offered its own tool called windows to go, which could generate a bootable windows usb drive with the enterprise