Thanks, not this in specific but it was something related to not shuting down properly. I powered off from windows by holding the off button instead of clicking on shutdown (I was afraid windows would want to install updates b/c I didn't use it for so long). So I booted windows again and turned it off properly then Debian came back to life.

For economists (and business) students it isn't a graphing calculator but same thing with HP12c (financial calculator). But it is only like 40 dollars.