Can someone tell me what the cause of this is and how to fix it: http://img.photobucket.com/albums/v80/castrostaal/TESV2012-08-2322-59-06-60.jpg

See there are lines in the snow up ahead and to my character's right. As I move toward the lined snow up ahead it disperses but as I move toward the snow on the right it stays the same. Here's a closer look at the snow on the character's right, all full of LINES: http://img.photobucket.com/albums/v80/castrostaal/TESV2012-08-2323-06-40-69.jpg

Please provide a full dxdiag in a spoiler tag. That looks like a driver issue, but we can't tell you a thing without that full dxdiag in a spoiler tag.