Why can't I save my photoshop file as a JPEG?

I am on a netbook and have windows starter. I am editing my photos on PhotoShop but it is only the free trial. Every time i go to click 'save as' the pop up to save it into my files does not come up, so I have to exit PhotoShop so it gives me the option to save before I close. This is a nuisance itself but... show more I am on a netbook and have windows starter. I am editing my photos on PhotoShop but it is only the free trial. Every time i go to click 'save as' the pop up to save it into my files does not come up, so I have to exit PhotoShop so it gives me the option to save before I close. This is a nuisance itself but when I do save it I have no option to save it to Jpeg. I have changed the depth of the photo and tried the 'shift+ctrl+alt'. Nothing is working, please help! I need this for a college course!
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