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PC unable to power on

By mapp84 ·
After emigrating to the UK from Australia, my PC had accumulated a lot of dust. Today I decided to remove all of the components from the machine and get rid of the dust. After I had done this I put all of the components back in place and ensured that they were seated firmly. I connected the power and video cables then pressed the power button. The CPU fan moved slightly but nothing else happened. No lights, no sound, nothing at all. Power is going to the motherboard because slightly inserting the ATX power cables into the motherboard results in a barely audible clicking noise. I have connected everything as it was before and as is stated in the motherboard manual, and I have never had a problem like this before.

My basic specs are as follows:

Azza PT-5VMD Motherboard
AMD K6-II 450
64 MB RAM
Webstar Spectra 3000 GeForce
Sound Blaster PCI64

Thanks in advance to anybody who is able to help.

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PC unable to power on

by burtsa In reply to PC unable to power on

If it is an AT motherboard not an ATX I would check the powersupply cable that go to the montherboard. They probably are reversed.


Shawn

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PC unable to power on

by mapp84 In reply to PC unable to power on

Sorry, I didn't clarify myself on that point. The motherboard accepts both AT and ATX connections, but my power supply is ATX. Thanks anyway.

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PC unable to power on

by dmiles In reply to PC unable to power on

Check the back of the power supply for a voltage switch and see if it is set for 110/220 and set it appropiately for the correct setting could be International Voltage Setting that could be causing this problem

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PC unable to power on

by mapp84 In reply to PC unable to power on

The voltage setting is the same for the UK as it is in Australia. All I have done to the computer is taken the parts out, cleaned them and then put them back in. I haven't changed anything at all. Thanks for your help anyway!

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PC unable to power on

by mapp84 In reply to PC unable to power on

Point value changed by question poster.

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PC unable to power on

by MarcAsk In reply to PC unable to power on

Since you did not mention weather you tested the PC after shipping it from AU to UK, I am going to assume you didn't. What I would like you to do is to remove all the i/o cards from the system board along with the floppy and IDE i/o cables. remove the keyboaard, mouse, and if the pc is so equipped, the usb devices. There should be nothing attached to the system board (if your pc has a riser card, leave it in. Some PC's will not turn on without it). If the p/s turns on, the problem is in one of the peripheral devices. Just attach them one at a time for the culprit. If nogo, remove the 2 pronged switch lead from the sys. bd and install a jumper or somehow carefully short the leads. If nogo, remove the memory. If still nogo, remove the ATX p/s lead from the system board, locate pin 14 (grey or green wire 4th one from the edge surrounded by 3 black leads) and short it to one of the afore mentioned neighboring grounds. When you apply power, the p/s should spin up (keep hard drive power lead connected)No= a bad P/S, Yes= a bad system board. I have always equated shipping to manhandeling and cringe whenever I have to put my PC in a box.

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PC unable to power on

by mapp84 In reply to PC unable to power on

Poster rated this answer

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PC unable to power on

by dszsmith In reply to PC unable to power on

Try reseating your CPU.

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PC unable to power on

by mapp84 In reply to PC unable to power on

I've removed the CPU, reseated it and tried again, still won't work.

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PC unable to power on

by OTL In reply to PC unable to power on

Don't remember if AU is 50 or 60 hz but UK is 50 hz. The system will not power up if the frequency is off by that much. A transformer to change the frequency or a 50 hz power supply may solve the problem, there may even be a jumper in the power supply to change the input frequency required.

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