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Welcome Screen is frozen
The Welcome Screen could appear to be frozen, but is actually taking a long time to display. See the sections below to determine if it is frozen or not.
If the Welcome Screen is frozen, try these solutions:
Solution 1: Clear your recent files.
If the Welcome Screen is frozen, try closing the Welcome Screen. If you can close it and keep working in Photoshop, it could be that a file you recently opened contains characters that can cause this issue to occur. Choose File > Open Recent > Clear Recent File List to remove this data from Photoshop's history.
Solution 2: Update or disable your virus protection software.
An old or damaged version of virus protection software can prevent the Welcome Screen from displaying. Temporarily disable your virus protection software, and see if the Welcome Screen opens normally. If it does, reinstall or update your virus protection software.