cecar wrote:Try to login to the 2D version of cinnamon. You can change that by clicking on session in MDM, Sounds like a graphic card issue to me.
Cinnamon works well with latest computers, as it is depending upon gnome3, which in turn is developed for new technology precisely touch screen
So if you have old pc, then cinnamon may not work properly. On the other hand as cesar said it can be a graphic card issue.
Did you try to install any other distro or other flavour of mint like MATE or Mint 13 XFCE? Some say 32 bit works better than 64 bit.