The first thing to do is to shut down the system and clear CMOS with a jumper. Then check all hardware devices systematically, including CPU, RAM, VGA, AGP and power supply. Check that your CPU, RAM and AGP are supported by your system (DDR and AGP support list is only available for XPC). If you are still unable to resolve this issue, please contact your local reseller/retailer (point of purchase) for more directions, and if necessary send it in for service.
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