I'm coming to you because for 1 week I've had a SOLIDWORKS problem, when I launch the software everything is fine but as soon as I open a room or create a new document the SOLIDWORKS logo remains in the background and impossible to do anything
Oops, for the settings it is strongly advised to make a backup of them right after creating them.
Did you do a system cleanup between uninstalling and reinstalling Solidworks?
Make a backup of your settings then reset them by going through tools / option then restore button at the bottom of the window (closes all open documents before doing so).