The external monitor will show input not supported when the notebook is in "show pnly in 2" mode. It wors perfect in other disply modes. Until yesterday it was working fine, but today I just couldn´t make it work normally. Thanks in advance!
More aboutinput supported show desktop
How are you switching modes? If you are doing it through Windows, see if you have another way through your graphics card's interface (if you have Nvidia control panel or if you have ATI's Catalyst in your toolbar).
Thanks a lot for your reply, now the problem I have is that the resolution is inferior to what it used to be, and aparently theres no way to increase it! Any idea?