And as for amd drivers not working what do you mean? The catalyst control center normally detects what hardware you have making it cover a wide range of gpu's
For starters it is a laptop. Second from when it was made reference drivers would not install on them without being modded first. Third there are no more drivers for it beyond this,
ATI Catalyst
as it has beeb declared legacy status by AMD, and which likely won't install for the reason already mentioned.
DoomOfRage if it is due to the driver being too old, there is unfortunately not much you can do. If it isn't the driver it could be that the x1400 in your laptop falls under the minimum requirements for the game,
OS Windows Vista/XP/7
Processor: Intel Core 2 Duo E6600 or AMD Phenom X3 8750 or better
Memory 2 GB
HDD 12 GB
Video Card Shader 3.0 or better along with 256MB NVIDIA Geforce 8600GT/ATI Radeon X1950 Pro or better
Sound Direct x 9.0c-compatible
DirectX9.0c
Call of Duty MW3 System Requirements Revealed
I would lean more towards it not liking the driver. Despite the GPU being below the recommended, the game should play; it just won't play very well even at all low settings.