Ahh! The Horror!

[Annihilation]

I am an owner of a TI 83+ calculator and all has been going well. Until just yesterday, that is. I recieved a program called... Krolypto, Kalypso, something to that effect (It is a password protection APP which protects on startup, prgm, mem mngmnt, etc, etc, etc), and now, my calculator refuses to turn on. Well, actually, I lied, it does turn on, and about half a second later, it turns itself off. No amount of button mashing seems to prolong the effect. I have taken out the batteries, and backup batteries, but it is still fried. A friend of mine (Lets call him CRB) is an expert on calculators, but I, however, am not (I know how to make programs, but not well. I also don't actively go and look for programs, etc.). He is the "tech support" of another friend of mine (Lets call him Fred, there are too many [he's] now ), who is just starting to get into making programs for calculators. He somehow manages to magically get rid of the huge crashes Fred makes. An example is when Fred made his calculator run a program, which nothing would happen until you tried to press the Enter button again. Then once you pressed the exit button, it modified something and it made your calculator load and keep loading some imaginary program it thought was there (the effect was it just sitting there with the [Asm(PrgmA..... Done] on the screen). Even when you turned the calculator off, it still was trying to load it. The program effectively froze your calculator, but you could still turn it on (and take the batteries out to turn it off). Apparently, there is a way CRB fixes it and gets the problem gone. He always turns around so that we can't see what he is doing, but he does it too quickly to be taking out the backup battery. I know that he takes out at least one battery. I have read on some other thread on this site that pressing [ON] while taking out a battery does something, but for me, there is no evidence of it working.

Wow, what a huge post. Oh well, I hope you guys can think of something!

[Darth Android]

if there is nothing of great value, take out a battery, press and hold [on]+[clear], and reinsert the battery. it should wipe RAM, Archive, and i think the OS. just get the OS from CRB's calc.

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[Justin W.]

Actually Darth after a calc reset. Holding On+Clear when turning the calc forces the calc to not create the vat entries for each program or variable that may still be on the calc.

[Darth Android]

ah, ok. that makes sense.

[X1011]

try DEL+ON

[Jeremiah Walgren]

Have you tried holding the [ON] button down? Does it stay on if you do that?