Posted 23 July 2008 - 02:32 AM
The fan speeding up is an indication of the computer overheating, this would also explain the computer shutting down.
If this is a desktop, open the case and see if there is a buildup of dust, look especially close at the CPU heat sink and fan assembly. If there is a buildup of dust you can blow it out with a can of inert air, this can be purchased at places like Staples, Radio Shack...
Safety precautions when opening the case
Caution: There are electronics inside the case that are very susceptible to electrostatic discharges. To protect your computer, touch the metal of the case to discharge yourself of any charges your body may have stored before touching any of the components inside. As a safety precaution you should unplug the computer to avoid electrical shock.
Family and loved ones will always be a priority in my daily life. You never know when one will leave you.