Knowledge Base

Solution 40491: Troubleshooting a TI-84 Evo That Will Not Turn On, Charge, or Function Properly. 

What troubleshooting steps can I try if the TI-84 Evo is not turning on, charging or functioning properly? 

Please ensure that there are no buttons that are stuck down below the keypad.

Please Note: The resets described in the troubleshooting steps below may cause a loss of applications, programs, and data. If at all possible, please backup all your files by copying data files and programs from your calculator to a folder on your computer using TI Connect Evo

Please use the links below to quickly move to the section you need:

 
Calculator will not turn on or charge:

First verify the USB port:

1) Attempt to charge the calculator by connecting to a computer or wall adapter using the USB cable that came with the calculator for at least 3 hours. If charging from your computer, ensure that your computer is not in sleep or hibernation mode and plugged into a wall outlet if using a laptop. If the calculator boots up check if the charge indicator displays a low charge, if it does let the calculator charge for a couple of hours. 

2) Check the reset button on the back of your calculator and make sure it is not pressed. If it is, use a solid object such as a paper clip to make sure it is no longer pressed. It is very important to not use an object that can leave behind debris, such as a pencil.

3) Press and hold the reset button on the back of the unit for at least 5 seconds.

4) Remove the battery door from the back of your calculator, disconnect the battery, leave disconnected for approximately 3 minutes, and then reconnect the battery.

5) Verify the USB cable is completely pushed into the TI-84 Plus Evo and is a tight fit. If it is not completely pushed in the charger will not detect it.

6) Allow to charge for 1-2 hours.

As the last step, try to reinstall the calculator Operating System (OS). To do this follow the steps below:

1)  While holding the [2nd] [Del] keys down, press and release the RESET button on the back of the calculator. The message "Installing OS & Apps" should appear. Use TI Connect Evo to transfer the latest Operating System to your calculator. If you have access to another TI-84 Plus Evo calculator, you may transfer the Operating System from calculator to calculator.

2) If your calculator still will not charge or turn on, please contact TI-Cares for technical support and additional service options.

Calculator will not function properly:

1) With the calculator turned on press [2nd] then [+] to access the memory menu. Next press [7] to access the reset menu and press [2] to restore default settings and verify if the issue is resolved. 

2) If not press and hold the reset button on the back of the unit for at least 5 seconds.

3) If still not functioning properly use the TI Connect Evo to transfer the latest Operating System.

4) If your calculator still is not functioning properly, please contact TI-Cares for technical support and additional service options.