Battlefield 2 fails to load...

The game was working fine before i did a format.. I had to format because of a OS problem and after the reinstall i reinstalled BF 2. After i installed BF2 i checked it and it ran fine so then i installed BF2 SF and it ran fine but after i installed the 1.5 patch the game fails to load i click on the icon and the screen goes black and goes right back to desktop and again before i did the format the game ran fine......

Spec's
windows XP SP3
P4 lga775 2.8ghz HT
EVGA 6800GS CO edition
ECS 848P-A7 LGA 775 Intel 848P ATX Intel Motherboard
1gig pc 3200
200gig hdd.

 

Yep everything is upto date and the only thing with a mark is my Microsoft lifecam VX3000 and thats because i have not installed its software yet.

 

Have you tried reinstalling the patch, with AV and firewall turned off? If that doesn't make a difference, wipe the game and do a full reinstall. You might just have corrupted something a reinstall can fix.