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Lights on but no one home...

The power indicator in the front turns on but when I go to boot the computer nothing happens. What can cause this and what can I do to fix it?

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This could be one of many things: First off if the set up is new and you just put it all together try removing all the IDE/SATA cables and see if that helps. If the machine then boots you know one of those devices is faulty or setup wrong. If that does not help, remove the RAM modules and try again - this may invoke a different error as the board may not want to boot without any RAM but you should notice a change. If no change then it could be the CPU or power supply unit (PSU) The MOST likely problem is that the PSU has given up or is not producing enough juice or is producing too high a voltage. The only way to check this effectively is to try a different PSU. I had a customer who brough me a machine which had stopped booting. He was told by a "friend" the CPU & mainboard had failed so he bought a new CPU and mainboard. The machine still did not boot and in fact the power supply was producing to high a voltage and had fried the mainboard and CPU. Then it fried the second CPU and mainboard he put in. Expensive mistake... so make sure you replace the power supply (or have it fully tested buy an expert) BEFORE you add any new parts to the set up.

Posted on Jun 19, 2007

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Posted on Jan 02, 2017

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I think your problem is your memory or video card.

Below are some steps that I recommend.

When you plug in the power cord is there any lights whatsoever on the computer?

When you press the power button do you hear fans running, hard drive spinning, lights on the computer, hear any beeps or lights constantly blinking, hear the DvD/CD drive click and the light on the drawer of the DvD/CD turn on for a second or two? If so the laptop is trying to boot or may have booted, but the screen is not showing for some reason.

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Maybe your memory is bad or the memory slot is bad.

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Maybe your power supply is bad. Sometimes there is enough power to make the power light or some other lights come on but not enough power to make the fan turn on or hard drive spin.


Below are links and info I found from Dell's Website based on your model.


http://support.dell.com/support/edocs/systems/dime521/en/SM_EN/specs.htm

Controls and Lights Front of computer:

Power button - push button

Power light
green light - Blinking green in sleep state; solid green for power-on state.
amber light - Blinking amber indicates a problem with the power supply inside the computer. If the system cannot boot and there is a solid amber light, this indicates a problem with the system board (see "Power Problems" in your Owner's Manual).

Diagnostic lights
four lights on the front panel (see Diagnostic Lights.)

Standby power light
AUX_PWR_LED on the system board

Hard-drive activity light
green light - When the computer is reading data from or writing data to the hard drive.

LAN indicator light

green light - Solid green indicates that a LAN (local area network) connection is established.


http://support.dell.com/support/edocs/systems/dime521/en/SM_EN/adtshoot.htm#wp1056411

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