Programming Homework Help

I have a working MASM code but its accepting numbers out of the range.

So when a positive number is inputted, its still continuing rather than giving the error message.

So when a positive number is inputted, it should go to the error message and not calculate the min,max, and average. also, the positive number should activate the end of the negative number inputs.

Valid number count is off

rounded average is off

attached are screen shots of my problem.