Dell Inspiron 2000 Reference and Troubleshooting Guide - Page 41
Large metal beams inside the wall behind the computer - power cord
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The following items can adversely affect the performance of a computer: Inadequate ventilation from operating the computer in a confined space, such as a desk enclosure Direct sunlight causing the computer to overheat Line noise or power drops and surges from electrical outlets due to poor wiring Line noises or surges through telephone lines High-voltage electrical appliances on the same circuit or operating in close proximity to the computer Speakers, especially subwoofer, or telephone too close to the monitor, generating magnetic fields that distort the display image Fluorescent lights causing display flickering or distortion Electrical extension cords and keyboard and mouse extension cables Too many devices on a power strip or multiple power strips from one electrical outlet Electrical conduits in an adjoining wall or elevators on the other side of the wall Large metal beams inside the wall behind the computer If removing potential sources of problems does not help, try moving the computer. If you are experiencing problems with power to your computer, perform the following tasks: Check the computer's power indicator. When lit, the power indicator verifies that the power supply is operating. If your computer is connected to a power strip, turn the power strip off and then on again. Plug the computer directly into an electrical outlet, bypassing any power protection devices. Plug a device, such as a lamp that you know works, into the electrical outlet to make sure the power source is okay. support.dell.com Basic Troubleshooting 3-3