Yeah, I have already emailed casio. :-/

I would expect 4 hours to be enough, yes. I wonder if there's some sort of special key combination as well, like DEL-ON and CLEAR-ON on the TI-8x calculators...

There are the service menus which you can get to using some special key combination. I don't know if these combinations are posted anywhere on Cemetech but a web search should help. I don't know if these key combinations will work on a Prizm stuck this way though.

In my opinion, the Prizm didn't like the USB power and somehow the RAM (or worse, the flash memory) got corrupt. Are you sure the USB ports on your computer are 5V steady? Was the calculator connected to a USB hub, and if so, was the hub powered (i.e. external power that's not the only port that connects it to the computer).

Also, was the calculator over/underclocked when it was connected to the computer? If yes, with what tool did you over/underclock it (Pover or my OverClui), and what was the clock configuration?

Sorry for asking this whole bunch of questions, but I feel it is important to know what caused the problem, and specially, if it is related to changing the CPU clock and/or USB power.
(I have been using my Prizm with the CPU running at 94.3MHz while connected to a USB battery, and have had no problem so far)

Flyingfisch,
It sounds like you tried the correct procedures.
Try brand new batteries and then press the reset button?
If that doesn't work, here is the support information link.
http://www.casio.com/support
Best Regards
John Andersen
Technology Coordinator
Education Division
CASIO AMERICA, INC.
570 Mt. Pleasant Ave
Dover, NJ 07801
P 973-361-5400 x 1509
F 973-537-8969
C 973-271-1305
email: jandersen@casio.com
www.casioeducation.com
Simply calculate the difference
P please consider the environment- do you really need to print this e-mail?


From: flyingfisch [mailto:flyingfisch@toppagedesign.com]
Sent: Tuesday, May 15, 2012 1:22 PM
To: Andersen, John
Subject: Casio PRIZM will not turn on

Hello,

I had my PRIZM attached to the computer via USB and after about 10 minutes the turn off screen displayed (you know, the white one with the casio logo on it). I did not have it in receive mode. It didn't turn off, it was stuck at that screen. none of the buttons would "wake it up" so I pressed the reset button on the back. The screen went blank.

I unplugged it from the computer and tried to turn it on with AC/on. nothing. I popped all the batteries out and put them back in. nothing. I tried plugging it back into the computer and pressed the reset button. still nothing. I even tried popping the batteries while it was plugged in and replacing them and it still won't turn on.

Is there anyway I can fix this or should I send it to casio?

--
flyingfisch

Looks like just a standard answer from the support department. Anyway, do what he told you to do, if you haven't yet.

Oh, and another question: was the Prizm running on alkaline or Ni-MH batteries? Was the setting on the system menu set accordingly to their type?

(looks like you got a long questionnaire for now, so I'll stop asking things now )

Is it still possible to invoke the bootcode OS updater?

simultaneously holding down F2, 4 and Ac/ON and pressing the RESTART-button (the calc should show a blank display after releasing the keys) and finally pressing 9 and x consecutively (hold down 9 and x about a second each).

If this display occurs

*********************
*
* OS ERROR
*
* Please update OS.
*
*
*********************

you can update the calculator with one of the available updaters.

If it does not work at once, be patient and try the key sequence several times before giving up.

I suppose that key combo calls some OS checksum tool. If the Prizm doesn't even get to the point of verifying which "special" keys are pressed... good luck. A friend of mine had a Prizm that stopped recognizing the keyboard events (it only turned on/off by inserting/removing the batteries), she sent it to Casio to be repaired, and they just replaced the calculator's motherboard (she lost all the data that was in the calculator).

Mr. Fischer,

Thank you for contacting Casio America. I am sorry to hear that you have
experienced a problem with your FX-CG10 calculator. Have you tried
changing to a fresh set of batteries? If you have not done so yet, then
replace the batteries, and then try powering on the calculator.

If you are still unable to power on the calculator, then there could be
a problem that requires repair. Without seeing the calculator in person,
I cannot determine whether this problem would be covered by warranty.
You can view warranty information by going to the following page on our
Web site:

http://www.casio.com/support/warranties/calcwarr

The bar code from the package would not be usable as a proof of
purchase. Your sales receipt would serve as the proof of purchase (you
can submit a photocopy and retain the original). You would need to pay
for the shipping in order to send the product to repair. If the problem
is something that would be covered under warranty, then the return
shipping back to you would be included as part of the warranty coverage.

We hope that we were able to assist you with your question, and again
thank you for contacting Casio America. As a reminder we can also be
reached at 1-800-706-2534 option 2.

flyingfisch,
I will be sending out a return Fed Ex Label to you. Please use this label to send in your Prizm FXCG10 to our Service Dept. They will either repair it or replace it.
If you have any other questions let me know.
Gina Pezza
Education Marketing Support
CASIO AMERICA, INC.
570 Mt. Pleasant Ave. Dover, NJ 07801
973-361-5400 ext. 1573 Fax: 973-537-8961
Edutemp1@casio.com