i have the 285.62 drivers now, do i have to do a clean install of a newer driver or can i just install it without even uninstalling the 285.62?
You're using 285.62?
Those are the worst that I've ever had till now.
Yes, it's always best to do a clean install of your drivers, unless you have made some profiles for some games. Have you?
No, you can't update or revert your drivers without un-installing the current ones.