I formatted my computer today and when I went to reinstall 2142, it said my cd key was invalid. I wrote it in permenant marker on the dvd itself and it worked the last time I installed it, so I have no idea what's going on.

 

This sucks.

 

/rant.

:f maybe you can't re-use the cd-key? meaning EA has made it so it can only be used once. I'm not sure about this tho.

There is a program provided by EA that will fix your problem...or if you can't find it theres info on fixing the problem in support

just log onto your ea account when you register and the key should work.