Update (8/16/2024): I have a theory on how to fix the charging issue without buying a new battery. If you're comfortable with opening your calculator then try this post I made on Reddit: www.reddit.com/r/calculators/comments/1etziui/fixing_ti84_plus_ces_that_wont_charge_volunteers/ You can read about my theory ahead of time here: www.cemetech.net/forum/viewtopic.php?p=307069 TI-Cares: education.ti.com/en/customer-support Buy a battery directly from TI: epsstore.ti.com/ Original comment: I'm going to OpenSauce June 14-16th! Even details here: opensauce.com/
hey, I tried to use zadig to download calc2key on my TI-84 plus CE but now i cant import files with TI connect, you made most of my favourite TI games and seem to be an expert at TI calculators so i was wondering if you knew how to fix this
I wish we could disable “Validating OS”. When I pick up my calc, I just want to do the math. Not wait for a boot. Its why I still use my Ti-34 MultiView or Ti-86.
It didn't always used to be this way, on calculators below rev C there was no OS validation, it just booted whatever was on it. Once they introduced rev C (boot code 5.1.5) they added this "feature".
My TI-84CE got caught in this loop and I had to buy a new battery. The good thing is I have a Casio CG50 as a back up and my TI-30 MathPrint which is a better European version of the TI-36XPRO. I almost threw my 84CE in the trash thinking at first it was a calculator issue.
dude i wish i was in the us so id be able to attend opensauce, so many awesome creators i love are going and to now hear the guy thats saved my exams many times is attending aswell makes me incredibly envious of the people attending. Hope you have lots of fun and make some content there :)
It’s like you can read my mind, my calculator has had this issue for ages now so I can’t even use it. After I gave up some months ago I’ve been waiting for something that could help me, thanks a lot for making thie
I still have a TI-84 Plus CE from 2015. (well, 2016, but it was used at the time.) Still works perfectly. My only guesses as to why they added that screen was to try and detect any "illegal" (assembly) software, or something that exploits loopholes in its security system. Nevertheless, they clearly implemented it very hastily, as it does not check the battery before verifying. Fun(?) fact: the OS validation screen was actually added to the operating system before the hardware speed upgrade. That means that for a short time, you could buy an 84+CE with the slower hardware and the OS validation. Talk about a lose-lose.
Sir, I don't understand why my continues to flicker after I did the restate? I also change the source of power from my techology to the walls and nothing working.
Sorry you'll have to replace the battery. TI can replace it for free. You can read this post I made for more info: www.reddit.com/r/ti84hacks/comments/1fj96tq/solution_ti84_plus_ce_flashing_validating_os/
That's really unusual you still get boot looping after getting a brand new battery. You can try holding 2nd and del while pressing the reset button on the back of the calculator for at least two seconds. I'm skeptical that will work though.
Unfortunately if the calculator won't charge a new battery then there's something wrong with the charging circuit. It's unusual but not unheard of. If your calculator is still under warranty then you can ask TI Cares for a replacement.
I should also add if the calculator isn't turning on with a new battery then there's something drastically wrong I don't have the ability to diagnose without hands on.
That's strange. You can try using a friend's battery and see if the calculator probably charges with the different battery. If the calculator can charge a friend's battery then you just need to order a new battery. If you contact TI Cares they might send you one for free. If the calculator can't even charge your friend's battery then there's something else wrong. I'd recommend trying a different power source and a different cable (again, try borrowing a friend's charger). If nothing can charge the calculator then you've got a major hardware issue. If the calculator is less than a year old then contact TI Cares and use your warranty to get a new calculator. If you're in the middle of finals and need a solution right now, you might be able to use something small (like part of a toothpick) to hold the reset button down while charging. You could tape the small object in place or hold it down with something heavy. You can also talk to your teacher or library and they might have a calculator you can borrow.
I got an old ti84 plus ce from a friend and it was completely dead. When I plug it in it does not get enough charge. Is there anyway to charge ot without the screen turning on?
Not without removing the screen. There's a link in the pinned comment for a reddit post with instructions. Very few people had success with that though.
You can see if TI's worldwide support will help you. education.ti.com/en/customer-support/support-worldwide You can try looking on sites dedicated to your region. Such as if you're in France you'd use Amazon.fr or ebay.fr
Hi, I was looking for a calculator for engineering, and I don't know whether to choose the HP Prime G2 or the TI N-spire CX II Cas, which one do you recommend? thank you
I still love the HP Prime G2 and many of my engineering friends like it too. Just be aware that the HP Prime hasn't really gotten any software updates in a few years so any issues you encounter probably won't get fixed.
My brand new Ti-84 plus CE model L, got this error, I tried charging externaly but when I tried again, the calc doesn't turn on, the battery doesn't charge anymore.....do you think that can I revive my battery???....
The battery sounds defective and I wouldn't try charging it anymore. If it refuses a charge then it's preventing itself from further damage. Contact TI Cares and they will send you a new battery for free.
@@TheLastMillennial I found a Samsung battery comparible: EB494353VU from a Samsung Galaxy Mini GT......but the problem that you can't charge in the calculator
I see. Did you but the calculator directly from TI or a reseller? Whoever sold it should honor your warranty since the calculator became 'defective' on its own. I'm not sure if the battery you linked is compatible with the TI-84 Plus CE but if it fits and it has three contact pads then the calculator should be able to charge it.
@@TheLastMillennial yes it fits and contacts too, contacts fits the same dimen....battery level indicator works too with this battery....Maybe there is a chip in TI batteries that the calculator can detect to know if it is original or not.
I was able to get mine working by using a AA battery and jump the TI battery for 30 sec to be able to have enough charge to go thru the OS validation cycle
this sucks. my prof let me borrow this calculator for the semester too and just before the final this happens. I'll give it back and let him know considering they'll most likely be able to fix it on campus.
No need to panic. Contact TI Cares and they will send you a new battery for free. You can ask to borrow a calculator from your teacher or library while you wait for a replacement. You can explain to them this is a very common issue with recent calculators. Communication with your teacher is very important if you want leniency. If you need a TI-84 right now for homework then you can search for a TI-84 Plus app on the app store.
Writing a calculator from scratch is a whole different ball game than the projects I do. I've tried emulating calculators on the Pi Zero but it's far too slow for emulation. You'd be better off using Wolfram Alpha or an existing calculator application for it
Increased cost, complexity, and lack of demand from schools. If Zero becomes more prominent in schools then they may start exploring options like that.
Older calculators never had this issue so I assumed it was an issue with newer calculators charging circuits. I will need to do more research to be sure though.
Why would they design a unit that needs to post its bios before it can enable charging?????? Whack engineering, that’s poor design. It’s bricked if the battery is left unused for some time.
You didn’t tell us anything that wasn’t posted on the TI troubleshot webpage. I am thinking you had some helpful hints / tips. This video is worthless.
I'm sorry you didn't find it useful. This video's goal was to describe 'why' the calculator doesn't charge. I'm still working on figuring out if there's a fix. I've documented my findings so far here: www.cemetech.net/forum/viewtopic.php?t=19670
Update (8/16/2024): I have a theory on how to fix the charging issue without buying a new battery. If you're comfortable with opening your calculator then try this post I made on Reddit: www.reddit.com/r/calculators/comments/1etziui/fixing_ti84_plus_ces_that_wont_charge_volunteers/
You can read about my theory ahead of time here: www.cemetech.net/forum/viewtopic.php?p=307069
TI-Cares: education.ti.com/en/customer-support
Buy a battery directly from TI: epsstore.ti.com/
Original comment: I'm going to OpenSauce June 14-16th! Even details here: opensauce.com/
hey, I tried to use zadig to download calc2key on my TI-84 plus CE but now i cant import files with TI connect, you made most of my favourite TI games and seem to be an expert at TI calculators so i was wondering if you knew how to fix this
I wish we could disable “Validating OS”. When I pick up my calc, I just want to do the math. Not wait for a boot. Its why I still use my Ti-34 MultiView or Ti-86.
It didn't always used to be this way, on calculators below rev C there was no OS validation, it just booted whatever was on it. Once they introduced rev C (boot code 5.1.5) they added this "feature".
My TI-84CE got caught in this loop and I had to buy a new battery. The good thing is I have a Casio CG50 as a back up and my TI-30 MathPrint which is a better European version of the TI-36XPRO.
I almost threw my 84CE in the trash thinking at first it was a calculator issue.
Just bought it and it’s already doing this BS . Never had this issue back in my days 😭😭
I just mine right and it’s doing this ion even know what to do
@@cartereverything8799what did you end up doing
@ I had to return that shii
Just happened to me rn
@@Dailymotivation_mindsetfree return it
Its crazy how they charge nearly $100 for a calculator that can't even turn on properly :/
My TI 84 Plus CE from 2015 is looking really nice right now
dude i wish i was in the us so id be able to attend opensauce, so many awesome creators i love are going and to now hear the guy thats saved my exams many times is attending aswell makes me incredibly envious of the people attending. Hope you have lots of fun and make some content there :)
It’s like you can read my mind, my calculator has had this issue for ages now so I can’t even use it. After I gave up some months ago I’ve been waiting for something that could help me, thanks a lot for making thie
Thank you!! My TI-84 Plus C Silver edition wasn’t charging. I pressed the reset button and now it is charging again 👏🏻👏🏻
You are a lifesaver! I just got my Ti-84 today.
i just bought it :( this is the first time i'm turning it on. it did this immediately
This is so helpful thank you!❤
I also thought I was the only one who eas struggling with that
I still have a TI-84 Plus CE from 2015. (well, 2016, but it was used at the time.) Still works perfectly. My only guesses as to why they added that screen was to try and detect any "illegal" (assembly) software, or something that exploits loopholes in its security system. Nevertheless, they clearly implemented it very hastily, as it does not check the battery before verifying.
Fun(?) fact: the OS validation screen was actually added to the operating system before the hardware speed upgrade. That means that for a short time, you could buy an 84+CE with the slower hardware and the OS validation. Talk about a lose-lose.
Sir, I don't understand why my continues to flicker after I did the restate? I also change the source of power from my techology to the walls and nothing working.
Sorry you'll have to replace the battery. TI can replace it for free. You can read this post I made for more info: www.reddit.com/r/ti84hacks/comments/1fj96tq/solution_ti84_plus_ce_flashing_validating_os/
It seems like every time I see a TI-84 Plus CE, I feel there's something wrong or the calculator is yet again have a flaw.
Zero seems to have updated their website do you have a new prototype to show us?
I recently got their latest prototype! I should have something posted within the next few weeks.
i live in Angola, where will I find a new battery?
I don't know the market in Angola. You can try contacting TI's international support education.ti.com/en/customer-support/support-worldwide
Wish I could be at OpenSauce but it's too far away... will you be making any videos about your time?
Wish you could come! I expect there will be enough interesting stuff to make a video about!
Try reset button and new battery, still not work. What other options can I have?
That's really unusual you still get boot looping after getting a brand new battery. You can try holding 2nd and del while pressing the reset button on the back of the calculator for at least two seconds. I'm skeptical that will work though.
@ I did try too. Still not working 😿
What is the next step I can do?
Unfortunately if the calculator won't charge a new battery then there's something wrong with the charging circuit. It's unusual but not unheard of. If your calculator is still under warranty then you can ask TI Cares for a replacement.
I should also add if the calculator isn't turning on with a new battery then there's something drastically wrong I don't have the ability to diagnose without hands on.
So what do I do if it only charges while I hold the reset button, do I need a new battery? 😢
That's strange. You can try using a friend's battery and see if the calculator probably charges with the different battery.
If the calculator can charge a friend's battery then you just need to order a new battery. If you contact TI Cares they might send you one for free.
If the calculator can't even charge your friend's battery then there's something else wrong. I'd recommend trying a different power source and a different cable (again, try borrowing a friend's charger). If nothing can charge the calculator then you've got a major hardware issue. If the calculator is less than a year old then contact TI Cares and use your warranty to get a new calculator.
If you're in the middle of finals and need a solution right now, you might be able to use something small (like part of a toothpick) to hold the reset button down while charging. You could tape the small object in place or hold it down with something heavy.
You can also talk to your teacher or library and they might have a calculator you can borrow.
I got an old ti84 plus ce from a friend and it was completely dead. When I plug it in it does not get enough charge. Is there anyway to charge ot without the screen turning on?
Not without removing the screen. There's a link in the pinned comment for a reddit post with instructions. Very few people had success with that though.
Is there a way I can buy the new battery internationaly? I don't live in the states so I need some kind of international delivery... Do you know any?
You can see if TI's worldwide support will help you. education.ti.com/en/customer-support/support-worldwide
You can try looking on sites dedicated to your region. Such as if you're in France you'd use Amazon.fr or ebay.fr
always a pleasure
Just bought one today and took it out of the pkg to charge and it’s doing this. 😒😒
OMG TYTYTY my calculator wouldn’t turn on at all until i clicked the reset button and now it works, I was so scared i was gonna have to buy a new one
🤓Thanks to you, my TI-84 Plus CE has come back to life. Thank you so much!
Hi, I was looking for a calculator for engineering, and I don't know whether to choose the HP Prime G2 or the TI N-spire CX II Cas, which one do you recommend? thank you
I still love the HP Prime G2 and many of my engineering friends like it too. Just be aware that the HP Prime hasn't really gotten any software updates in a few years so any issues you encounter probably won't get fixed.
@@TheLastMillennial New 2.2.15008 beta update with a lot of bugfix
I saw, I'll be trying it out when I have time
My brand new Ti-84 plus CE model L, got this error, I tried charging externaly but when I tried again, the calc doesn't turn on, the battery doesn't charge anymore.....do you think that can I revive my battery???....
The battery sounds defective and I wouldn't try charging it anymore. If it refuses a charge then it's preventing itself from further damage. Contact TI Cares and they will send you a new battery for free.
@@TheLastMillennial Ti Cares just Cares US/Canada users, I am from LATAM, they send me to a local distributor to BUY a new battery
@@TheLastMillennial I found a Samsung battery comparible: EB494353VU from a Samsung Galaxy Mini GT......but the problem that you can't charge in the calculator
I see. Did you but the calculator directly from TI or a reseller? Whoever sold it should honor your warranty since the calculator became 'defective' on its own.
I'm not sure if the battery you linked is compatible with the TI-84 Plus CE but if it fits and it has three contact pads then the calculator should be able to charge it.
@@TheLastMillennial yes it fits and contacts too, contacts fits the same dimen....battery level indicator works too with this battery....Maybe there is a chip in TI batteries that the calculator can detect to know if it is original or not.
Do you plan on going to any other OpenSauce events?
I definitely want to see some events if I have time!
And this is why I'll never get a post rev A calc. Gotta love boot 5.0.0.0089.
Did anyone try something and it work cuz I just bought mind rn and it’s doing this bs
I was able to get mine working by using a AA battery and jump the TI battery for 30 sec to be able to have enough charge to go thru the OS validation cycle
That's a really interesting solution. I'll have to think more about the potential risks involved but I'm glad it worked for you!
this sucks. my prof let me borrow this calculator for the semester too and just before the final this happens. I'll give it back and let him know considering they'll most likely be able to fix it on campus.
Mine doesnt work Im going to a request a battery from the company
This is why I prefer a fx-CG50/20
he is back let's gooooo
sadly none of this worked so we had to send it back and get a new one
bro mine wont even reset
night before ACTs 🔥🔥🔥
In the morning you can ask the library, a teacher, or a friend if you can borrow one.
The other fatal flaw is that ZERO calculators are just better.
If you want to use one you'll have to come to OpenSauce ;)
Damn, I JUST got it and id rather not buy a new battery, hopefully chsrging it over night helps
Dude i got your problem and trust me, it wont
same i got mine today because it got stolen the other day now its not opening💀
I just had this issue. Omg I’m panicking. I tried troubleshooting. Probably need to buy a new battery
No need to panic. Contact TI Cares and they will send you a new battery for free.
You can ask to borrow a calculator from your teacher or library while you wait for a replacement. You can explain to them this is a very common issue with recent calculators. Communication with your teacher is very important if you want leniency.
If you need a TI-84 right now for homework then you can search for a TI-84 Plus app on the app store.
Thank you, the reset button worked ❤
Thank you!
Can you try to make your own graphing calculator with a raspberry pie zero
Writing a calculator from scratch is a whole different ball game than the projects I do. I've tried emulating calculators on the Pi Zero but it's far too slow for emulation. You'd be better off using Wolfram Alpha or an existing calculator application for it
@@TheLastMillennial I see. But if someone else were to do it it would be pretty cool and it could probably be done significantly cheaper than a TI 84
There's a startup called Zero that's basically making a TI-84 but using an Arm chip. I've made a video on the latest prototype.
@@TheLastMillennial yes I saw one other thing. Why don’t they put a micro SDHC card slot on these calculators you could store a TON of program
Increased cost, complexity, and lack of demand from schools. If Zero becomes more prominent in schools then they may start exploring options like that.
I'm in 8 th grade but I do 10th grade geometry and my class loves to brag about our calculators
Nice. You could 1 up them by making a cool program for your calculator tibasicdev.wikidot.com/starter-kit :)
@@TheLastMillennial yeah sadly my calculator is having this issue and I am waiting for ti to send out a free replacement battery
Got mine 5 mins ago and this is happening
Same it won’t work
if the battery is the problem why tf would i need to swap it with my friend lol
Older calculators never had this issue so I assumed it was an issue with newer calculators charging circuits. I will need to do more research to be sure though.
just bought this stupid calculator :( and its alr doing this
If TI won’t help you, return it and buy a Casio. Just saying.
Why would they design a unit that needs to post its bios before it can enable charging?????? Whack engineering, that’s poor design. It’s bricked if the battery is left unused for some time.
You didn’t tell us anything that wasn’t posted on the TI troubleshot webpage. I am thinking you had some helpful hints / tips. This video is worthless.
I'm sorry you didn't find it useful. This video's goal was to describe 'why' the calculator doesn't charge. I'm still working on figuring out if there's a fix. I've documented my findings so far here: www.cemetech.net/forum/viewtopic.php?t=19670
POS calculator