[davey]

i did google search found this and it works
According to EA, you need to do a clean install. Even if you already tried re-installing, follow these instructions. There are registry keys that need to be removed. Just follow below:
1. Delete the games directory. By default this will be C:\Program Files\EA Games\Medal Of Honor Allied Assault. Then delete MOHAA from the start menu as well. By default this is Start->Programs->EA Games->Medal Of Honor Allied Assault

2. Now load the registry editor. Go to Start -> Run -> type in "regedit" (without the quotes).

3. There is a registry folder that causes this and must be removed. It is found in:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\Curr entVersion\Uninstall\

You must then select and delete the folder name below found in that above location:
{0DEA94ED-915A-4834-A87E-388D012C8E02}

Delete this folder, then close the registry editor, and reinstall the game normally.

YIPPEE IT WORKS