A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
It sounds to me like the answer to both of your questions may be that you need to create a Column Chart rather than a Bar Chart... Bars plot horizontally, Columns plot vertically.
As for the Switch Row/Column button [also in the Switch Plot control in the Data group of the Charts tab of the Ribbon], the only time I've seen it dimmed is if insufficient/inaccurate data is in the dialog.
In order to offer anything more definite we need to have a much fuller description of the data, how it's arranged, as well as a more complete understanding of what you're attempting to plot.