Question about Texas Instruments TI-84 Plus Calculator

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My TI-84 calculator lost its cover for the batteries. Since then it sometimes can't turn on or show anything when I push the button "on". But sometimes it still can work. But because I havent used it for half an year, now I totally cant make it work. Is it really broken? Or any solution can make it work? Thanks very much!

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Hi twylazhangzh,

Sound like your Ti 84 Plus is really over loaded and, can't function properly. You can fix that by installing the newest Ti 84 Plus 2.55v. MP OS. operating system.

If you have a friend that has a Ti 84 Plus or, Ti 84 Plus Silver Edition you can connect the two calculators together through the IO link ports and, they can send you a copy of their OS while you receive it on your Ti 84 Plus. Hopefully your friend will have Ti84 Plus 2.55v. MP OS on their calculator or, it might not work.

If you can't find a calculator to connect to you can connect your Ti 84 Plus to a computer that has Ti Connect software on it. If you need to connect your Ti 84 Plus to a computer just keep following my instructions below.

First, you need to download and, install Ti Connect to your computer. If you don't need any help installing Ti Connect goto Procedure 1.

If your computer's OS is XP or Mac and, you need instructions to download and, install Ti Connect click, "Install Ti Connect on my XP or Mac OS". Just follow Procedure 1 at that posting and, come back to this posting to finish downloading and, installing Ti84 Plus 2.55v. MP OS to your calculator.

If your computer's OS is Windows 7 and, you need instructions to download and, install Ti Connect click, "Install Ti Connect on my Windows 7 OS". Just follow Procedure 3 at that posting and, come back to this posting to finish downloading and, installing Ti84 Plus 2.55v. MP OS to your calculator.

Procedure 1 to installing Ti84 Plus 2.55v. MP OS

1). You can also get the latest copy of Ti84 Plus 2.55v. MP OS and, guidebook by going to the Texas Instruments web site. You can get to that site instantly by clicking, "Ti 84 Plus 2.55v. MP OS!" Once your at the Ti site click the Download Item, "Ti84 Plus family operating system". Next you can login or, click "continue as guest". I'd would click the "continue as guest". Once you have click, "continue as guest" the Ti84 Plus family operating system will download to you.

Next, click "SAVE" and then a window to a folder will pop up. It is probably a window to a folder that you download too. If so, you may want to change it and, save to this folder, "My Documents \ My TI Data \ Downloads". You can also go back and, download the Ti 84 Plus guidebook too, if needed.

Link your computer and, Ti 84 Plus calculator with the USB cable or, Direct Black Link cable that came with the Ti 84 Plus calculator. Next, drag the Ti 84 Plus 2.55v MP OS that you saved earlier in "My Documents \ My TI Data \ Downloads" out of that folder and, drop it in the "Ti Connect" icon on the desktop. Click, "Continue" when the "Erase Warning" pops up and, the new Ti 84 Plus 2.55v MP OS will begin to install.

Next, the Ti Device window should pop up and, highlight the port when found that your Ti 84 Plus is using, USB1 cable or, Direct Black COM1.

My TI-84 calculator lost its - oneplusgh_42.jpg

When the Ti Device Explorer finds and, highlights your calculator's information click, "Select." Then click, "Yes" when the next window shows up with your calculator's information and, the OS will continue to download. Upon completion the newest Ti 84 Plus 2.55v. MP OS will be installed.

If you run into any trouble with software or, drivers just comment to what failed at this posting and, I'll be glad to help you.




Posted on Jan 12, 2011

  • 8 more comments 
  • charles williams
    charles williams Jan 12, 2011

    If your Ti 84 Plus will not turn on make sure your ready to install the OS by completeing everything down to where I say, "You can also go back and, download the Ti 84 Plus guidebook too, if needed." Now you can try removing one of the AAA batteries. Press and hold the [DEL] key. While holding [DEL] key, reinsert the AAA battery and then turn the calculator on. The calculator should display "Waiting...Please install calculator software now" Now go back up to where you left off at the part about the guidebook and, finish the process. I'm hoping the calculator will come back on when you re-insert the one battery. It may be to late since the OS was failing a long time a go. You may contact Ti and, get a replacement for about 1/2 price if you can't get it to work.

  • twylazhangzh Jan 16, 2011

    Hi, I'm trying to connect my calculator to my computer but the problem is the calculator cant turn on even though it has been connected by USB.

  • charles williams
    charles williams Jan 16, 2011

    Make sure the batteries are in correctly? The batteries alternate negative/positive, positive/ negative and so on. And you tries the remove one battery instructions above. I'd send it to Texas Instruments. Not even a year old. they may replace it completely. Go to this link, I'll post under this one and, it be a great way for you to contact Texas Instruments. I give the same instructions to a Canadian Ti user. Well, I was hoping it would come back on. But, you might still do OK, if still under Warranty.

  • charles williams
    charles williams Jan 16, 2011

    http://www.fixya.com/support/t7800686-th...

  • charles williams
    charles williams Jan 16, 2011

    http://www.fixya.com/support/t7800686-th...

  • charles williams
    charles williams Jan 16, 2011

    Are your absolutely sure the batteries are good and, new and are in correctly? If it won't come on after the procedures I gave, then send back to Texas Instruments. Try again, take all the batteries out for 8 minutes even the real small one. Put them back in and removing one of the AAA batteries. Press and hold the [DEL] key. While holding [DEL] key, reinsert the AAA battery and then turn the calculator on. The calculator should display "Waiting...Please install calculator software now" To install the new OS use the Ti OSDownloader that's in the menu of Ti Connect.

  • twylazhangzh Jan 18, 2011

    i tired several times but it still failed to work~ This calc was more than 4 years old though, I probably should buy a new one.
    But really thanks for the help!!! You are such a nice person!!!! Thank you so much!

  • charles williams
    charles williams Jan 18, 2011

    Your Welcome!!!

  • charles williams
    charles williams Jan 18, 2011

    Before you throw away, take all the batteries out including the small one in the back. You'll have to use a small philips screw driver to get the small battery. Kind of pop it out. Wait for 8 minutes and then, put them back in except one AAA and, follow my instruction above about pressing the [DEL] key and, inserting one battery back in. If that doesn't work I'd say, "Get a new one!"

  • charles williams
    charles williams Jan 18, 2011

    Be ready to install the new Ti 84 Plus 2.55 OS, if the Ti 84 Plus does comes on. Or you will crash it.

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Nothing shows up on the screen when I push any buttons. It will turn on, but after that nothing I push shows up on the screen. I have taken the batteries and the back up battery out.


Does the cursor show up at all? TI calculators have an annoying habit of dimming the screen when the batteries are changed so that it appears as if the calculator isn't turning on. Turn the calculator on (or at least press the ON key). Press and release the 2ND key. Press and hold the Up-arrow key for a few seconds and see whether the screen becomes legible.

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If Texas Instruments TI-84 Plus Calculator hangs on screen "RAM CLEARED" , what should I do?


You should try a few different things:

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If my Texas Instruments TI-84 Plus Calculator gets hang on screen with "RAM CLEARED" , what should I do?


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My TI-84 plus silver edition calculator is not responding. Whenever I press a button it takes forever to put it up on the screen or it doesn't work at all! I need some serious help with this. I tried...


Hi purzabumafu8,

You need to re-install the Ti 84 Plus OS on both calculators, ASAP!!! You can fix these problems by installing the newest Ti 84 Plus 2.55v. MP OS, operating system. Use fresh batteries.

If you have a friend that has a Ti 84 Plus or, Ti 84 Plus Silver Edition you can connect the two calculators together through the USB or, IO link ports. Then they can send you a copy of their OS, while you receive it on your Ti 84 Plus. Hopefully, your friend will have Ti84 Plus 2.55v. MP OS on their calculator or, it might not work. Link the two calculator together through the USB or, IO link ports with the proper cable. If don't have another reliable calculator to connect too, you'll have to connect the calculator to a computer to download the OS, goto Procedure 5. If your downloading off another calculator goto Procedure 1.

Important Note: Never disconnect a TI Connectivity Cable during a transfer. Lost of power during installation of OS will destroy your calculator.

Procedure1. Procedure to linking to another calculator.
On their calculator press, [2nd][Link][G] [Right-Arrow]. On your calculator press, [2nd] [Link] [Right-Arrow] [Enter] and, then press [ENTER] on their calculator too. Their calculator should say, "TRANSMIT" and, your's will say "Receiving." Then on both calculators once transfer is complete press, [2nd][MODE] to quit and, return to the Home screen. If the OS was transferred then your finished with these procedures. If your calculator won't turn on or, is locked up try the Procedure 2, below.

Procedure 2.

Remove one of the AAA batteries. Press and hold the [DEL] key. While holding [DEL], reinsert the AAA battery and then turn the calculator on. The calculator should display
"Waiting...Please install calculator software now". If calculator did not turn on or, is still locked up goto Procedure 3, unless already did Procedure 3, then goto Procedure 4. If you calculator does come on and is responding and, your connect to another calculator goto Procedure 1. If you calculator does come on and is responding and, your connect to a computer goto Procedure 7.


Procedure 3.

Remove all of the batteries including the round lithium battery for 5 minutes. After the 5 minute period, reinsert all of the batteries and turn the calculator on. Adjust the contrast if necessary. Goto Procedure 2.


Procedure 4.

If the above process did not work. Try re-doing the Procedure 2, and, this time extend the time in Procedure 3, by 5 minutes to 10 minutes before you put all the batteries back in the calculator. These calculators can be a little stubborn at times so, keep trying Procedure 2.



Procedure 5.

If you can't find a calculator to connect too, you can connect your Ti 84 Plus to a computer that has Ti Connect software on it. If you need to connect your Ti 84 Plus to a computer make sure the Ti Connect software is operating properly. You do not want any hang-ups while installing the Ti 84 Plus OS.
Procedure 6. Procedure to installing the latest Ti84 Plus 2.55v. MP OS. TI OSDownloader does not always install the latest OS.
You can get the latest copy of Ti84 Plus 2.55v. MP OS and, guidebook by going to the Texas Instruments web site. You can get to that site instantly by clicking, "Ti 84 Plus 2.55v. MP OS!" Once your at the Ti site click the Download Item, "Ti84 Plus family operating system". Next you can login or, click "continue as guest". I'd would click the "continue as guest". Once you have click, "continue as guest" the Ti84 Plus family operating system will download to you.
Next, click "SAVE" and then a window to a folder will pop up. It is probably a window to a folder that you download too. If so, you may want to change it and, save to this folder, "My Documents \ My TI Data \ Downloads". You can also go back and, download the Ti 84 Plus guidebook too, if needed. If your calculator will not turn on or, is locked up goto Procedure 2. Or else goto Procedure 7.

Procedure 7.
Important Note: Never disconnect a TI Connectivity Cable during a transfer. Lost of power during installation of OS will destroy your calculator.
Link your computer and, Ti 84 Plus calculator with the USB cable or, Direct Black Link cable that came with the Ti 84 Plus calculator. Next, drag the Ti 84 Plus 2.55v MP OS that you saved earlier in "My Documents \ My TI Data \ Downloads" out of that folder and, drop it in the "Ti Connect" icon on the desktop. Click, "Continue" when the "Erase Warning" pops up and, the new Ti 84 Plus 2.55v MP OS will begin to install. Next, the Ti Device window should pop up and, highlight the port when it finds what your Ti 84 Plus is using, USB1 cable or, Direct Black COM1.
oneplusgh_48.jpg

When the Ti Device Explorer finds and, highlights your calculator's information click, "Select." Then click, "Yes" when the next window shows up with your calculator's information and, the OS will continue to download. Upon completion the newest Ti 84 Plus 2.55v. MP OS will be installed.
If you run into any trouble with software or, drivers just comment to what failed at this posting and, I'll be glad to help you.

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http://epsstore.ti.com/OA_HTML/csksxvm.jsp?nSetId=90524&nUsePub=NO&JServSessionIdrootdlek22=z6c2ohx3v1.n6LzoN8M/AzOnMTOogTxpQOUtxCLbx0Ka0--&jttst0=6_23871,23871,-1,0,&jtfm0=&etfm1=&jfn=ZGC5A4DDBCF3F0595853A68C079E5256B1556E2E93FB96ACB00A6AFBBC9B77BE7654B72492D9041952FB73A07FF7EFF0FB73

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