Ok, my friend just gave me a AVI rip of one of his DVDs. The first time I watched the file it was perfect, absolutely clear and no problems what so ever. I left it for a few days and came back to it to watch it again and when it started playing the picture was upside down. I have deleted the file and got a new one from my friend but same deal. The file works on other PCs but not mine.
Any ideas?