Make sure you have updated all your drivers.
If you are using Windows 10 you can also try running Steam as Administrator.
If your name is using characters other than English ones, try changing it to English only characters.
Generally make sure your console is clean and dust free.
Check what error code you are getting and try Googling it first. Sometimes this can be a PlayStation console error and there's not much we can do about that. In that case you should contact PlayStation customer support.