When I open photoshop I get this message


A while ago happened the same thing and was able to 'fix' it for a while, but then the message started to show up again. Whenever I use PS the graphics move so slow, everything moves sooooo slow. I have to wait a couple of seconds to see what Im doing, it makes me wanna (but i don't do it cuz its the only laptop i have and gotta take care of it ). I read on a page that reactivating PS and then installing it again helps, but, ehem, I didn't buy it I just generate codes whenever I use it So i don't know what to do.

Has anyone have this problem? Any advice?

PS: I have CS4