Solved System will not power on

October 28, 2013 at 22:09:29
Specs: Windows 7
Hi all. A few days ago my system stopped powering on. Specs below.

It would simply do nothing when the power button was pressed. I opened it up and tested the MB power cable in my PSU test unit. Power supply came on, fans came on, voltage showing on test unit. Plugged it back in. Still dead.

Removed parts one by one until it would boot. Removed video card and it booted up to POST beep. Retried, same thing. Tested another video card. Dead. Tested another video card. Dead. Retried original video card. Dead. Retried booting without video card. Nothing?!?

Right, now it won't boot at all, but when I flick on the power switch on the PSU the motherboard power and reset buttons light up (there are small power and reset buttons right on the MB) but do nothing. I now have it stripped to just MB, PSU, CPU/FAN, still nothing. I'm almost positive its the MB, but I need to be sure if its that or the CPU before I order replacement. Any ideas would help. Thanks.

Motherboard - Asus P6T
CPU - Intel i7 Quad core
Video - ASUS EAH4870 DK/HTDI/1GD5 (ATI Radeon HD 4870 with Dark Knight Cooler)

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October 28, 2013 at 23:25:48
✔ Best Answer
A failed or faulty CPU wouldn't stop your PC turning on.I suspect the PSU is faulty so change that.

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October 29, 2013 at 02:59:10
i totally agree with phil replace your psu with a good one not a cheap one that has at least a 80 percent efficency rating


message edited by Davidw

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October 29, 2013 at 12:03:22
In addition to the above, you need to verify the PSU that you install has enough amps on the +12v rail to power whatever graphics card you use.

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