Need system builder helps !

[Jayzilla]

Ok , here is the story : i building a a basic pc for my dad , but when i plug the 4 pins power to the Seagate 300gb HD, it's only turn on 1 second and turn off every thing , then i have to unplug everything to restart again , so far i have tries different power suppy , hd , ram , but still the same .

The second problem :
while i testing the new system , i took out my 600 watts Supernova psu into the new system to see if it work or not , the answer is no , then i put it back to my gaming machine , but when i plug the ATX power to my ds3 mother board , the whole pc turning on and off every 3 second , it's happen when the the ATX power plug into the board , any one have the same problem above before ? i am so tired and my hands got cut by the pc fans so bad , i feel so dumb right now .....and i'm not gonna build any more pc , sorry for my bad grammer , any one please help me out.

[onebxr]

do you have your front panel (start button, reset button) wires connected correctly? This is what gets me most of the time and your problems are what I experience when I get those wires crossed. Check them carefully with the manual that came with the motherboard.
-1

[Jayzilla]

Thanks for the reply :
Yes , i can even close my eyes to do this , caz i've try it like over 10 times...still doesn't work , any one else ? please

[theburan]

What I would try doing, is hook up everything out side of the case, on a cardboard box or something else non conductive, and just see if it works. If it does, then there's a chance something is shorting out something when you have it all in the case.

If that fails unhook stuff one by one, see if it starts working after any of it gets unplugged. If it's still turning on and off with the cpu unplugged, i would hazard a guess that the power supply is bad.

If you have a multimeter, I would also try checking the voltages your psu is putting out, make sure nothing is out of spec.

I think i had a bad mobo that did something similar to what your describing too, where it would turn on and off repeatedly.... it was a gigabyte p965 s3 revision 1, might need to rma the mobo if nothing else looks bad, but I'd check the power supply and any possible shorts first.

[Jayzilla]

Thanks for the reply , sorry for lack of info .
New System :
Mother Board: GIGABYTE

GIGABYTE GA-945GCMX-S2 Core 2 Extreme
http://www.cesell.com/product.php...tid=136806

HD : SEAGATE Barracuda 7200.10 Ultra ATA/100 300GB
http://www.pacificgeek.com/produc...=46213&P=F

CPU : C2D E4400 (OEM)

PSU:400 Watt X-Connect VS Power Supply
http://www.ultraproducts.com/prod...ctID=4 78


Video card:GeForce 8600GT 256MB
http://www.newegg.com/Product/Pro...6814130085

DVD Drive :
LiteOn LH-20A1H - DVD±RW (±R DL) / DVD-RAM drive - IDE
http://triointernational.com/all....at/froogle

Ram: Kingston 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 667 (PC2 5300) Dual Channel Kit Desktop Memory Model KVR667D2K2/2GR - Retail
http://www.newegg.com/product/pro...6820134384

Problem :the whole pc light on like 1 second then turn off , look like not enough power or what , until i unplug the 4 pins molex connector from the 300Gb HD , is the HD bad ?????
So far i have been test the : PSU , HD , Video Card , Ram , because these are took from my system.



My System :

M..Board : GIGABYTE GA-965P-DS3 LGA 775 Intel P965 Express ATX Intel Motherboard - Retail
http://www.newegg.com/product/pro...6813128012

CPU: C2D E6600

Video Card :MSI 8800GT 512m
http://www.clubit.com/search.cfm?...50&cat=all

Ram:
OCZ Gold 2GB (2 x 1GB) DDR2-800 CL 5-5-5-12 Dual Channel Kit Retail OCZ2G8002GK
http://www.clubit.com/product_det...o=A4308035

HD : Raptor 75gb

PSU : xion 600watts
http://www.newegg.com/Product/Pro...6817190012

DVD drive : SAMSUNG 20X DVD±R DVD Burner with LightScribe Black SATA Model SH-S203N - OEM
http://www.newegg.com/product/pro...6827151154

Sound Card : X-fi Fatality
https://www.zipzoomfly.com/jsp/Pr...e=10005538
Creative Labs Sound Blaster X-Fi Fatal1ty FPS Sound Card Retail

Problem :
the system is working normal but After i took out my own psu to test the new system , then when i put it back , it's only run like 3 or 4 seconds then shut down and repeat continuous , until i unplug the 4 pin 12V Connector from the psu .

so far i have disconnect the HD , video card , ram , sound card , and use the psu , but problem still here , the system just runs in 4 second but nothing show up in monitor , am i missing any thing ? if you need some more info please let me know .

[theburan]

Ok, with that first computer, I would try plugging in the hard drive using a different molex plug, from a completly different string if possible, just in case there's a short on that strand of plugs.

For the second computer, that sounds exactly like what happened to me. I would rma the motherboard, and if it still happens, rma the video card and the ram... but I would start with the motherboard.

[Hitman]

Originally Posted by theburan

For the second computer, that sounds exactly like what happened to me. I would rma the motherboard, and if it still happens, rma the video card and the ram... but I would start with the motherboard.

To just start RMA parts is bad advice. Do your best to isolate the problem, then after you are sure a part needs to be RMA'd then RMA it. To just RMA parts as a part of troubleshooting is not a good idea.

[theburan]

Very true, it would be best to unplug everything at a time, try them with other parts, etc... but he's already done that. Just my 2 cents, since I had the same problem with a gigabyte motherboard, and since he already tried unplugging everything, and well, it sounds like what I was having trouble with too. Only other thing I think he could try would be to use a different psu, not sure if he's tried that or not.