Hello,
Your case reference number is :00439778
To resolve the issue with displayed imaged been upside down this will depend on the model of the projector.enter the Menu > Installation 1 > Projection Press the cursor ◄► button to choose from four projection methods.
About the blurry lines disconnect the VGA cable and see if the image is better. Should it be that the image is better you will need a new VGA cable or it could be a wall box if you have one. However, if this does not resolve the issue you will have to check if the vent or filters on the projector are free from dust.
You can contact us with the above case reference number and the serial number of the projector so we can check the warranty and provide you with the best support.
Thanks
Franklin
Promethean Tech Support