> all you have to do is take one of the aaa's out and press on then put it > back in No, that won't reset the memory. If the calculator won't turn on, you have to remove one AAA, hold on down for 10 seconds, replace the AAA, and try to turn the calc on. If that doesn't work, try it again. If you do this twice in a row, it will clear any 86, reguardless of it's condition.