Why when I import a video on my after effects I can't preview anymore? Appears to me a green screen...I updated all the drivers including my video device...Please, help me, I dont know what to do else.
Without any specific info about your system nobody can tell you much. You essentially already did the right thing in updating your dirver. As such it pretty much boils down to keep on trying - play with the settings, check your hardware acceleration stuff in AE, try different driver versions.