Hello LindaHackett1, welcome to the Microsoft community, I'll be happy to help you today;
Are you using Dell supportassist to update drivers?
Initially I recommend that you look for updates on Windows Update;
Press Windows key + i and go to Update and Security;
Click Check for updates and do all pending updates;
Check under Optional Updates too;
After that try to make the update available again;
Hope it helps, see you soon!