None of my buttons work except the ON button

To clear the memory on a Casio DM-210 calculator, follow these steps:

1. Press the "AC" button. This will clear all values and functions from the calculator's memory.
2. Press the "M" button. This will access the calculator's memory menu.
3. Press the "C" button. This will clear the memory.
4. Press the "EXIT" button to exit the memory menu.

If you want to clear a specific memory location on the calculator, you can do so by following these steps:

1. Press the "M" button to access the memory menu.
2. Press the number of the memory location you want to clear (for example, "1" for memory location 1).
3. Press the "C" button to clear the memory location.
4. Press the "EXIT" button to exit the memory menu.

If it says RAM cleared after you turn it on, it may be that the backup battery is depleted. Replace it.

Is the cursor checkered? If so, there is no more space on the entry line. Use the DEL key to shorten it or clear it. Clear the RAM also.

Command line register may be full. Clear all entries.

Resetting the Calculator
If the calculator doesn't respond to keystrokes or if it is otherwise behaving unusually, attempt to reset it. Resetting the calculator halts the current calculation and cancels program entry, digit entry, a running program, a SOLVE calculation, an ∫ FN calculation, a VIEW display, or an INPUT display. Stored data usually remain intact.

To reset the calculator, hold down the C key and press GTO . If you are unable to reset the calculator, try installing fresh batteries. If the calculator cannot be reset, or if it still fails to operate properly, you should attempt to clear memory using the special procedure described in the next section. If the calculator still does not respond to keystrokes, use a thin, pointed object to press the RESET hole.
The calculator can reset itself if it is dropped or if power is interrupted.

CLEARING the MEMORY

If the calculator fails to respond to keystrokes, and you are unable to restore operation by resetting it or changing the batteries, try the following MEMORY CLEAR procedure. These keystrokes clear all of memory, reset the calculator, and restore all format and modes to their original, default settings (shown below):

1. Press and hold down the C key.
2. Press and hold down the R/S key
3. Press i (You will be holding three keys simultaneously)
4. When you release all three keys, the display shows MEMORY CLEAR if the operation is successful.
   

Hi there,

Well first of all you can try to reset your calculator, just follow the below steps to know how to reset it -

1. Turn off your TI-83 Plus.
2. Open the battery panel on the back of the calculator and remove one of the AAA batteries. Keep this battery handy, as you'll need it again.
3. Press the "Clear" button, and keep it held down.
4. Put the battery back in and turn on the calculator, with the "Clear" button still held down. When the calculator's screen displays the message "RAM Cleared," release the "Clear" button.
5. Remove one of the calculator's batteries again. This time, hold down the "Del" key.
6. Reinsert the battery and turn on the calculator. Release the "Del" key when the screen reads "Waiting...Please install calculator software now."
7. Use the TI Connectivity cable to connect your calculator to your computer. Run the TI Connect software to reinstall the calculator's operating system. If you don't have an up-to-date copy of TI Connect, see Resources.
8. Turn off the calculator and disconnect the TI Connectivity cable. Remove the AAA batteries, as well as the small, circular lithium battery.
9. Wait five minutes before putting the batteries back in. Turn on your calculator.
Hope it helps ..........

Good Luck!!

Thanks

The Ram cleared message is normal after you change batteries. When you see this message you press the CLEAR button to erase it. You do not press the ON button again because the calculator is already ON. If you want to turn calculator OFF you press [2nd][ON] (OFF).

On certain calculators, pressing the ON button when calculator is already ON is interpreted as INTERRUPT the current command.

clear ram

Hello,

RAM cleared means that the machine removed all old values stored in variables. And it is wainting for you to start calculating.
Enter any operation
1[+]1 should give you 2.

If the keys do not answer when you press them and nothing shows on screen you the calculator may have to be repaired.

Hope it helps.

happened to me be4, except all my buttons didn' t work. I just did what people do in movies. throw it aroun, step on it, bang it against walls, desks , ect. Then my teacher took it away. The banging cleared all my ram. It was weird, but it started working.

I think the circuit board moved, and i hit it back into alignment.