No power!

By rosscoandsandi ·
Gday, i just rebuilt my system. new mobo, VC, CPU, PSU, DDR2 RAM, case fan. basically everything but the case. plugged it all in and nothing. no post. no fans going. nothing. changed the power lead. checked psu is accepting 230W. power and reset buttons on front dont do anything either. I've also scratched my head and still nothing. any ideas?

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All Answers

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See if this helps

by Jacky Howe In reply to No power!

First thing to try is loosening the Screws that hold the Motherboard to the Case. They will only need a full turn. Reconnect the Power and turn it on. If it powers up shut it down and retighten the screws. They only need to be firm.

Carefully remove everything from the Motherboard. Remove the Motherboard and put it on an anti-static mat on a bench. Remove the Power Supply. Remove the Heatsink and give it a good clean. Remove the CPU and reseat it. Reinstall the Heatsink remembering to use CPU grease. Clean the golden edge of each memory stick with a soft rubber, remembering not to touch the golden edges. Check with one stick at a time, remembering to disconnect the power from the PC between checks. Connect a hard drive. If you have access to a PCI Video Card use it.

Reinsert the 20-24 pin power connector to the Motherboard. Connect a Keyboard and Mouse. Connect the Monitor. Connect the Power to the Power Supply. You can use a flat blade Screwdriver to short the Power pins on the Motherboard if you haven't got a spare switch. Turn it on and see what happens.

If that PSU is only rated at 230W replace it with someting around 450-500W and dont go cheap as they are inferior.

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Got it sorted, thats Good <NT>

by Jacky Howe In reply to See if this helps
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great advice but still nothing

by rosscoandsandi In reply to Got it sorted, thats Good ...

every piece of equipment is new. the only thing was that i was told there can be 3 power supply plugs on some motherboards. i have plugged in the 24 pin and the 4 pin. but cant find any other plugs which might go from the PSU to the mobo. plugged in a new switch and it doesn't work either. i loosened the screws holding the mobo. i guess i will pull the entire thing apart and rebuild piece by piece until it fires up. This is the mobo i put in ttp://
thanks for you ongoing help.

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Have you

by Jacky Howe In reply to great advice but still no ...

replaced the power supply. It really is underpowerd. Follow the steps that I described for working on the bench. Ensure that you have CPU Grease on the CPU. Try clearing CMOS, your manual should have instructions. Also check the power outlet that you are connected to by plugging in something else and turning it on.

Keep us informed.

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all fixed

by rosscoandsandi In reply to Got it sorted, thats Good ...

CMOS jumper was on the wrong setting from the person i brought the mobo from. bloody small things to track down. powers up and have re-installed xp pro. now i get the BSOD every few hours. am working on the drivers. fun and games. thanks for your help.

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I'm glad that

by Jacky Howe In reply to all fixed

that does'nt happen to often.
I suggest to clear CMOS and it was being cleared already.
I'll have to try and remember that one.

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minidump help

by rosscoandsandi In reply to I'm glad that

i deleted the floppy drives from device manager as i have got a long enough ide ribbon to reach on the new mobo. it seemed to have helped slow the BSOD's. PFN is currupt and a few others are still coming up however. how do i perform a minidump. can you talk me through it and then i might be able to send you the details of the problems. OH Smeg said that the mobo companies sometimes ship the CMOS jumper on clear data to save the CMOS battery. learn something new every day.

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here ya go

by Jacky Howe In reply to minidump help

A couple of ways to do this

My Computer, Properties, Advanced, Startup and Recovery and untick Automatically restart. While you are there make sure that Small memory dump (64 KB) is selected and the output is %SystemRoot%\Minidump. The Blue Screen will dump the Minidump file.

This will Blue Screen the PC. Take note of Stop 0X000000 error message and post it.


Minidump Files can be found here. C:\WINDOWS\Minidump\Mini122707-02.dmp

< just to add >
If you have a few minidumps just zip them up.

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When you marked the first post with a

by OH Smeg Moderator In reply to all fixed

Thumbs Up I thought that it was solved so I didn't respond.

However the CMOS Jumper set to the Clear position is a common thing with many M'Board makers they set it like this to prevent the CMOS Battery running down.

As for the BSOD look in BIOS at the CPU Specs they are probably incorrect and this is causing the thing to fall over.

While the CPU Speed may be correct the FSB & Multiplier can be set wrong and this causes the problem.

I hope that helps


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If you

by Jacky Howe In reply to all fixed

want help with a minidump PM it to me.

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