The reason for your Samsung printer not able to connect to Windows 10 after the update from Windows 7 could be because of a number of reason. I will discuss a different set of troubleshooting techniques to resolve the issue. Follow the instructions given below carefully:
Check All Your Connections
Make sure the wire connecting your printer to the computer is working fine, no cable in your computer or printer is damaged. Also, make sure to check all your power connections. In case your printer is wireless or a network printer make sure that both the printer and the computer are on the same wifi network.
Re-Install Your Printer
At times it has been noticed in Windows 10 that the update causes the previously installed machines to disappear. So set your printer as default going to "Start" > "Control Panel" > "Add a new device/printer" and let your computer search for the nearby devices. Once your printer gets detected, click on it and follow the on-screen instructions to install this printer as your primary device.
The new update from Windows 7 to Windows 10 might have caused the drivers to be erased or corrupted. So, go to your vendor's official website and download the latest available version and install it on your computer. Please note that during installation your computer will restart a couple of times to make the necessary changes.
Firmware contains encoded messages for your printer to function properly and in addition to that it provides necessary updates to the problems caused by an older version. So like the previous step, go to your vendor's official website and download the latest available version of the firmware for your printer model.
Reset Your Computer to Earlier Times
If any of the above-mentioned steps do not resolve the issue, then make sure to reset your computer settings to a time when the printer was working fine.
Hopefully, these steps helped you in resolving the issue. in case you have any query related to the solution provided, kindly revert back and I will be glad to help.