No Power to System: Check my sequence?

maddcow

Junior Member
Dec 7, 2005
7
0
0
I'm hoping some of you can let me know if I'm missing anything or doing anything wrong as I try to troubleshoot this problem. This is the first comp I've built ground up.

Components:

Case: Aspire X-Plorer ATX Mid-Tower Case
Mobo: Intel D945PSNLK Intel Socket 775 ATX Motherboard
PSU: Aspire / 520-Watt / ATX Power Supply
CPU: Intel Pentium 630 3.0GHz Processor
Heatsink/Fan/Paste: Thermaltake Socket 775 Copper Heatpipe / Intel P4 LGA775 CPU Cooling Fan / OCZ Thermal paste
RAM: OCZ Value Dual Channel 1024MB PC4200 DDR2 533MHz Memory (2 x 512MB)
Vid Card: Xmdia GeForce 6500 128MB DDR2 /PCI Express
hard Drive: Maxtor QuickView 100Gb SATA
Other: Two case fans and a bay cooler, dvd


I started with putting the CPU onto the mobo as per the pretty little pictures Intel sent with the board. It seemed fairly idiot proof... drop it straight down, make sure the tiny tabs go in place. I pushed gently and then closed the hatch down on top, it locked just fine (required some but not excessive pressure to close).

On went a rice grain sized dab of paste with the heatsink and fan on top (with back plate on other side of mobo)

Put the spacers in the case, they all line up with mobo. Mobo goes on top of spacers and then screw it all down.

Power Supply in, memory, video card, hd, dvd, fans. All hooked up to PSU and mobo.

Close it up, drag it over to a monitor, etc and plug it in. Hit the power button and it all lights up, fan turns once and it all dies. I try again and it lights for half a second and dies. Subsequent tries do nothing whatsoever. I pulled the PSU and tried another 500W that I know is working in another rig and it does the same thing. Semi-turn of the fan the first time and since then, nothing at all.

-I looked for anything touching the mobo where it shouldn't. Came up dry.
-Pulled everything but the Cpu/heatsink and memory... nada. No beebs, no love. Green mobo LED is on though.


So... From what i've gleamed from this site I'm thinking the following:
-Pull mobo out of case.
-pull CPU, check for damage to pins. Reinstall if looks good.
-Keep only the CPU, PSU and one stick of memory.
-Pull CMOS battery for a few minutes and then put it back in (no CMOS jumpers on this mobo apparantly)

Then keep trying to boot (shorting power leads from case with a screwdriver) while testing that one stick of memory in each position possible. Then try with the other stick.

If no good then try with and without video card in place.

If none of this works then it must be either the CPU or the Mobo. And being that the CPU cannot be returned then i should send the mobo back to the distributor and tell it is shite. Hope I get a new one and that it works.


Am i missing anything? Any suggestions on how to proceed are appreciated.

 

montag451

Diamond Member
Dec 17, 2004
4,587
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Are you sure you haven't swapped round the reset button and the power button on the mobo header?
Best to disconnect all wires from the header, and trip the two power button pins with a screwdriver for an instant - as you have suggested you are about to do.

You 've done well with the tshooting.
 

maddcow

Junior Member
Dec 7, 2005
7
0
0
No luck.

Tried with both PSUs:


Pulled battery for a few mins then reinserted.
-Pulled CPU out carefully, no visible problems. Put back in.

Tried one RAM stick in each slot, and both in corresponding DIMM slots.
Tried starting up both with a screwdriver to trip power leads (hard to miss these... they are color coded red).

The most I could get was a 2 millimeter twitch on the CPU fan. No beeps, no love, no hope.

I'm fresh out of ideas. The Mobo was brand new in the box and I can't think of anything I did to pooch it. But the mobo is the only thing I can point to as being the culprit here.

Anyone have any other ideas?
 

wpshooter

Golden Member
Mar 9, 2004
1,662
5
81
First of all have you completely read ALL the owners manual for the motherboard and other components at least 2 to 3 times ?

Are you sure there is NO CMOS jumper on the motherboard ?

If there is not, please read the motherboard manual for instructions on how to reset the CMOS.

I would consider taking the CMOS battery out for about 1/2 to 3/4 of an hour and then try it, BUT I would consult the manual or Intel before doing so !!!

Good luck.
 

maddcow

Junior Member
Dec 7, 2005
7
0
0
RMA'd the motherboard and bought a nice, shiny Asus board. Everything went off without a hitch.

My girlfriend is now the proud owner of a new system