Hello,
Make sure your NVIDIA drivers are updated.
Try to open your NVIDIA control panel (look at your taskbar, look for NVIDIA icon and right click on it and click "Open NVIDIA Control Panel". While you're on your NVIDIA control panel window, go to Manage 3D settings. Look at the number 1 at NVIDIA 3D settings, you will see the list of programs that are already installed in your computer, look for Football Manager (if it is not there, you can manually browse it into your computer directories), after you find fm.exe, set it to "use global settings".
If it doesn't work, try to move your Football Manager folders somewhere as backup and install the new one.
It would help a lot if you can post your full specification of your computer and which directory you did install your Football Manager.
Thanks.