How can I fix this? Is the message something to worry about? I changed the twarnmsg.exe file name so it would stop popping up. It specifically says a problem with the cooling system has been detected, please turn off and return immediately for service. Intel Celeron M Processor 2.8Ghz XP Home SP2 AVG and Norton Internet Security seems to be taking up a lot of resources as per the task list. The CPU usage has been running at 100% lately.