Question about HP 12c Calculator

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How to reset my HP 12 C calculator ? it's doesn operate right

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I just follow the paper clip trick (took the batteries out, connect the + and - with th epaper clip, then turn it off). After clearing all the program memory and turned it on & off, it worked fine.
Thanks.

Posted on Jan 07, 2009

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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.

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