PC Hardware forum

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Computer won't Turn on

by Vin75 / September 24, 2007 1:10 AM PDT

I suspected it might be the powersupply at first.

I have an antec Phantom 350 powersupply. The thing is when I plug the power in the led on the front display for the clock and tempature reading goes on.

I see a green light for the network card turn on which means power must be going through my board. So I don't know if it's my powersupply. When I turn it on nothing happens.

BTW this occured because there was a poweroutage in my house for a moment when I was gone. I thought the circuit breaker was tripped due to a surge but there was nothing tripped.

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Collapse -
Dealing with a dead PC.
by R. Proffitt Forum moderator / September 25, 2007 1:55 AM PDT
In reply to: Computer won't Turn on

There are many discussions you can read about this. Just for starters try http://www.google.com/search?hl=en&q=DEAD+PC

My favorite is still cardboard and just the basic 4 parts of motherboard, CPU, heatsink+fan, speaker and the PSU. I hope it beeps or else I've knocked it down to those 4 parts.

Bob

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Common Problem
by bentedgz / September 25, 2007 11:31 PM PDT

The problem could still be your power supply. The green led on the motherboard simply indicates 5 volt power is available. There are several different voltages provided by the power supply. I have seen similar problems several times. The least expensive way to be sure is to pick up a power supply tester from your local computer store. These generally cost less that $20, and have assorted plugs that will accept the feeds from your power supply. Just make sure that you get one that's compatible with your motherboard (20 or 24 pins). Just unplug all of the feeds to your motherboard, drives video card etc. and attached the tester. It will have led indicators to let you know if all of the power outputs are doing their job.

Good Luck!

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