@f_d_alexander
I revised the answer above since it dawned on me (from your mention of "display resolution") that you are likely using desktop software (CD/download) and not Online TurboTax. The answer I left was for Online TurboTax.
If you're using desktop software, you'll just have to see if it will let you efile after you missed the deadline, or whether you encounter a roadblock telling you it's too late. I don't know how strict it is; i.e., a hard deadline or not. If you try to efile, please report back if it was successful or not.
Again, I apologize for the confusion.
