My Hp photo printer has started printing pages back to front! That is to say...it prints (for example) page 5, then 4, then 3 etc. I have gone into PRINTING PREFERENCES and made sure the box is ticked for printing pages FRONT TO BACK, but it still does it...?
Now to be serious, what software are you trying to print from when this happens?
As an example, if I click on the File menu in Internet Explorer, then Print, under the general tab I then click on Preferences followed by selecting the Paper tab, there is an option to select Reverse Order printing. The printer I have is an Epson so I am not sure if your print driver will behave exactly the same.