bf2142 HELP!!!

im trying to get into 2142 but im findint hard at the moment.
have done a complete re-install of windows and all relivant software, but still the problem remains.
i can run the game in multiplayer and it run perfect in top res mode, but... only runs for like 5 mins then shuts down to windows. i have had a max of about 30 mins play time in one sitting. was told to have a look in the event viewer in admin tools and the message i get is

- The description for Event ID ( 0 ) in Source ( ) cannot be found. The local computer may not have the necessary registry information or message DLL files to display messages from a remote computer. You may be able to use the /AUXSOURCE= flag to retrieve this description; see Help and Support for details. The following information is part of the event: 7. -

anyone got any ideas?? need to sort it out so i can get back playing the game
all drivers and sortware is up to date and all legal