TI-84 Not Showing Graph — How to Fix

Your TI-84 Plus CE should display a graph after pressing GRAPH, but the screen is blank. This is one of the most reported issues — and it almost always has a simple fix.

Most Common Causes (Check in Order)

1. The function is deselected

The = sign next to each function in the Y= editor must be highlighted for the graph to display.

Fix: Press Y=, move the cursor to the = sign, and press ENTER to toggle it on.

2. The window is set to the wrong range

If your function exists outside the current window range, the graph is there — you just can't see it.

Fix: Press ZOOM → 6: ZStandard to reset to the default window (−10 to 10). Then press GRAPH again.

3. A stat plot is turned on

If Plot1/Plot2/Plot3 is enabled without data, it causes a blank screen.

Fix:

1. Press Y=
2. Look at the top row — if Plot1, Plot2, or Plot3 is highlighted, move the cursor there and press ENTER to turn it off
3. Press GRAPH again

4. The function has a syntax error

A typo causes the calculator to skip drawing the graph without showing an obvious error.

Fix: Press Y= and carefully re-read your equation. Make sure you're using X (the variable key), and all parentheses are matched.

5. Wrong graph mode

If set to Polar, Parametric, or Sequence mode, Y= functions won't graph correctly.

Fix:

1. Press MODE
2. On the row that shows FUNC PAR POL SEQ, make sure FUNC is highlighted
3. Press ENTER, then try GRAPH again

6. The line style is set to off

Each function in Y= has a line style selector on the left. If it's set to the "off" style, nothing will draw.

Fix: In Y=, move the cursor all the way to the left of the function. Press ENTER repeatedly to cycle through line styles until you see a solid line.

7. Screen contrast is too low

In rare cases the graph is drawing, but the contrast is too dim to see.

Fix: Press and hold 2ND, then press the ↑ arrow key several times to increase contrast.

Quick Checklist

| Problem | Fix | |---------|-----| | = sign not highlighted | Y= → cursor to = → ENTER | | Graph out of window | ZOOM → 6: ZStandard | | Stat plot enabled | Y= → turn off Plot1/Plot2/Plot3 | | Wrong mode | MODE → set to FUNC | | Syntax error in function | Re-enter the equation carefully |

Still Not Working? Try a RAM Clear

1. Press 2ND + MEM (above the + key)
2. Select 7: Reset
3. Select 1: All RAM
4. Press 2: Reset

Warning: RAM Clear deletes all programs and stored data. Back up with TI Connect CE first.

After a RAM Clear, the default Y= screen will be empty and graphs should work normally.