Why are all the keys I push showing asterisks on ti-84 calculator?

SOURCE: None of the buttons on my TI-84 Plus calculator are working.

is the cursor the graphing cursor or the normal typing cursor?

SOURCE: Can you Factor on a TI-84? IF not, does the TI-89?

Well, to answer part of your question, yes... the TI-89 does factor like this. it is inputted like this:

factor(6*x^2+11*x+4,x)

Check the catalog in the TI-84 (which is 2nd-zero) and look under F for factor()

SOURCE: comma key on TI-84 Plus Siver Edition calculator.

The comma key on the TI 84 SE is above the 7 key, and it is just left of (, right of x squared, and below SIN. thats where the "," key is. If you're asking something else, please clearify. My understanding is that you don't know where the comma key is. 

SOURCE: My TI 84 will not turn on. All batteries have been

try adjusting the contrast up using 2nd + up
just keep pressing it and it should turn back

SOURCE: My TI 84 calculator freezes

9+3<5-6(1+4)>