Hi and welcome to the site, I’m Louie. Sorry you had to wait awhile but I’ll do my best to help.
Initially, if the MENU and previously taken pictures stored in the memory card can also be not viewed, then the LCD display screen of the camera has gone bad.
On the other hand and if can still be displayed, then it would be the CCD of the Fujifilm FinePix S4250 that has failed. The CCD is the eye of the camera and it is now blind.
Both of the above would be an internal hardware issue requiring that the camera be opened up to effect repairs.
I realize that the above information may perhaps be not what was expected. Unfortunately, there is no quick-n-easy fix and neither is there a workaround; sorry for having to be the bearer of bad news.
Please post back how you would want to approach this and/or should additional information be needed.