My calculator is not charging or turning on

Leave it charging for a few hours. If it still boot loops then press and hold 2nd and del (they're the top full sized buttons on the keypad) then press the reset button on the back of the calculator with a pencil for at least two seconds. You should see a message that says "send OS now". Do not press clear.

Leave it charging on this screen for another few hours. Afterwards, press and hold the reset button on the back of the calculator for at least two seconds again (but don't hold 2nd and del this time). This might cause the calculator to boot normally.

If you get the same "send OS now" screen then press the clear button (rightmost column on the keypad) and proceed with an OS reinstall: TI-84 Plus CE Recovery Techniques.

If it still boot loops then you likely got a defective unit. I'd return it for a new one.

If returning isn't an option, you can try buying a new battery and replace it. Texas Instruments TI-84 Plus CE Battery Replacement

well when i hold 2nd and del and the reset button nothing happens i tried it on the charger and off the charger

Well for me im pretty sure my story is somewhat the same but a bit different.

I had accidently let my calculator drain the battery and die, now that i try to charge it. It wont charge and it kept flashing "Calculator will restart when blah blah is done" then i tried the "2nd" and "del" method and now im stuck with the calculator flashing at me to wait and "Please install operating system now." and "Press [clear] to erase all storage" i tried erasing the storage but once it hits "3E' while erasing the storage, the calculator resets and keeps flashing. I even tried hitting the reset button on the back and it basically did nothing. So now im stuck with a broken calculator. I have tried replacing the battery and it did nothing... ;-;