Minecraft launcher will open and updates when needed but is really buggy and the images get screwed up and i have to search for the buttons because certain parts of images will be over them.
only occurs when the launcher isn't maximized and usually happens when i try to change the profiles. When the images are messed up and then changed to be maximized the launcher works normally without any problems.
The versions downloaded are 1.7.4, snapshot, 1.6.4 with forge buildcraft and railcraft.