I'm sorry about the issue. Did you just updated your computer from a previous windows version to Windows 10? Or is this a brand-new computer that came with Windows 10?
Have you tried to download and install the Windows 8 (and/or Windows 8 x64) printer driver for your printer model Canon Selphy CP910 at the Canon website below; Windows 8 driver usually works for windows 10:
If it does not work, or if you'd like to, you can go get rid of Windows 10 and go back to your previous Windows version:
- Click on the Start button (which is the windows logo icon at the lower left corner), then click on Settings, then click on Update & security, then click on Recovery on the left, then there, select the option to go back to your previous windows version.
Please reply at the box below to continue troubleshooting. Thank you.