It is highly probable that your computer is overheating —either the CPU or the graph-ics card. Open the cabinet and look to see whether the CPU fan is functional. Check if all the fans in the cabinet as well as those in thepower supply are working. If possible, remove the CPU heatsink, clean the contact surfaces ofthe CPU and heatsink with a clean piece of cloth, apply a thin coat of thermal paste suchas Arctic Ice, and replace the heatsink on the CPU. Neatly arrange and tie up all the wire sand cables to allow free airflow. If possible,purchase a rounded IDE cable and install it inplace of the flat ribbon cable.
If the problem persists, the fault lies with your graphics card, and there is little that can be done except downloading (from www.nvidia.com) and installing the updated driv-ers for your card. If that doesn’t help, you’ll need to get a new one.
