Laser issue. Your console is able to authenticate the discs fine (no RSOD), but then cannot play the title in a reasonable period of time, so defaults to the browser.
Typically a cleaning, and a turn counterclockwise of the white cog in the drive bay by a couple notches, fixes this up for me, assuming the coils are still good. You might even drop the ohms to the pots by a hundred or so.
Good luck to ya.
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Oshawa modder... up there in Canada.