White screen and sometimes black lines on calculator after it fell

Hi, does your computer recognize your calculator when you plug it in? If so, then there’s definitely a hardware problem with the screen and you’ll need to contact TI Cares to get a replacement calculator. Thankfully your calculator is still covered under the 1 year warranty.

If you want, you can try to run a LCD self test to see if it changes your screen at all. To do this:

1. Turn the calculator on, then press [mode]>[alpha]>[s]. (If you’d like a video tutorial, I have one here.)
2. Then press [enter] 3 times.
3. Now press [1].
4. The self test will start. Press [enter] slowly 8 times to cycle through each test.
5. Press [enter] one more time to quit.

There may be a small chance that this is a software problem and I’d suggest following TI-84 Plus CE Recovery Techniques. just in case.