what are the possible causes when all the pins of a chip are all high or all low?

what does it mean when the chip is too hot? ,and chip only works when u press down by ur finger?,7segment LED display shows nonsence, all the LED outputs of a counter are on and seem to flicker .when does a shift counter reach a certain state and gets stuck there
why my binary counter counts like this :0,8,2,10,4...
another counter stays in the state that its turned on and does not change at all|
one of the pins of my chip is nietther high nor low
PLEASE if you can think any possible causes for each problem tell me as quick as possible
THANK YOU
okey i was in hurry before but i can ask the question in human language:
i got this questions on a quiz:
given list of problems think of the possible causes:
1)seven 7segment of LED shows nonsence
2)pilot light turns off when you connect the circuit
3)chip toooo hot(burned)
4)one of the pins on a chip is neither high nor low
5)all the pins on a chip are high
6)chip only works when u press down with ur finger(into the board)
7)all ther LED outputs of a counter are on and seem to flicker(light brighter then less brighter)
8)all the pins of a chip are low
9)all the pins of a chip are high
10)a shift counter reaches a certain state then gets stuck there
counter stays in the state that is turned on . does not change at all
11)binary counter gives the sequence:0,8,3,10(wrong sequence)

essay problem answers
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1)what will IC tester display if you plug the chip upsidedown and press "Search"
2)what will IC tester display if you plug the chip upsidedown and