there is a lime green line on all videos i watch

Problem
there is a lime green line on all videos i watch

Solution
Have solved this problem sorta of.   Right click on video to bring up the Adobe Flash Player box. Uncheck the hardware acceleration.  This will eliminate the double image and the green line. I am wondering if Adobe did something with their flash player.

Unable to change my desktop background Windows 7 Starter

Yes!!! Microsoft sucks... anyway....

There is no personalization feature. However, you can get around this very easily by downloading Oceanis; it's safe, it's free and has been a solution for so many people with the same problem as you. Here is the link:

http://dl2.sevenforums.com/dl/Oceanis_Change_Background_W7.zip