Solution: "A problem with the cooling system has been detected." Toshiba Overheating Warning? Cooling Fan Off? Stop Sleep.
If your Toshiba laptop computer is giving you the warning "A problem with the cooling system has been detected. Please turn off the computer immediately, and return it for service," try to solve the problem by following these steps (it worked for my Toshiba Satellite A505):
1) Go to your Windows 7 Control Panel and click on "Power Options." Choose "High Performance" and then click "Change Plan Settings."
2) Under both the "On battery" and "Plugged in" columns, choose "Never" as the "Put the computer to sleep" setting. Then click "Save changes."
3) Check for Windows 7 and Toshiba updates.
Now if the solution I've outlined above does not seem to always work, then continue to use those settings PLUS NEVER put your laptop into the Sleep Mode or the Hibernation Mode. It seems that sometimes Windows 7 forgets to start the cooling fan when it brings the computer out of Sleep.