HI-FI

I need some help, I just got a NEC vt 45 from a friend of mine and the
projector seems to be in excellent condition, it powers on and it
display the image.

Here are the problems Im having with the projector:

When It powers on a message comes on that says, Please clean the
filters

I downloaded the manual for the projector and cleaned the filter as
they suggested, with a vacum cleaner.

That did not help.

When I display the image from a DVD player the entire screen its
green, I can see the movie but everything its green.

This is a little funny because when I browse the menu all the colors
look sharp and beautiful.

I dont know what to do, also the lamp only has 195 hours on it.

Please help