Hi,
We're sorry about the trouble with Photoshop. Would you mind what happens when you try launching Photoshop? Are you getting an error or is that application freezing? Please ensure you have all available Windows updates installed on the computer.
You can roll back to the previous version of Photoshop using the steps suggested here: https://adobe.ly/2wH0JjE
Please uninstall the latest version of Photoshop first & select the option to Keep Preferences prior to installing the previous version.
Regards,
Nikunj