CD Key Suddenly Invalid

[EazyCurrE]

This pisses me off because BF2 is only one of three games that I have honestly acquired. It was about a week I took off from BF2, but when I went to join a server I get "CD Key Invalid". Ive already tried re-installing the game and patching but that didnt work. A couple of other things Ive noticed that are wrong are:
The splash image not appearing when running bf2 or pr
There is no Battlefield 2 folder in the registery; HKLM/Software/Electronic Arts/EA Games

All of this still persists after reinstalling the game.

Please help me idk what else to do.

[AgentJadeD]

Refer to this thread.
Troubleshooting Guide: Your CD-key is not valid

[EazyCurrE]

The above guide wouldnt help me, just because bf2 is completely missing from my registry. I went ahead and fully re-installed the game. But now theres a new problem. I joined a vanilla server, and once it was done loading I ctd. Not that big a deal, but now when I try to start up bf2, my screen just blinks and spits me out to my desktop without any error message.

*sigh, should probly make a new thread.