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Sigh....Can't Start My Custom Built Computer

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Last response: in Systems
September 11, 2009 6:43:51 AM

Greetings Everyone
Been lingering around this board for sometime, and decided to upgrade my computer, from a amd athlon 3000+ to the following, but after the upgrades I can't start my computer. I hit the power switch and nothing happens.


GIGABYTE GA-MA785GM-US2H Socket AM2+/ AMD 785G/ A&V&GbE/ MATX Motherboard
(got mine from ewiz)

AMD Phenom II X3 2.8ghz
(got mine from ewiz)

Corsair DDR2 1gb
(got from frys)

Evga 8600GT

Viotek 550w

40GB 7200rpm WD
(yeah I know its too small, Broke)

Cooler Master ATCS

Prior to these upgrades, I got a free pentium 4 510 from a friend, I bought a cheap $30.00 ECS mobo, and ran it with the psu, gpu, ram etc stated above, but the board was dead, although everything powered up. Then I got the new board and cpu this week, and after assembling the thing, I can't get this thing to start up. Its in the same case, using the same psu, gpu, ram, etc. Just different cpu and mobo, what could be wrong here? Did I damage the plugs or something here??? All the plugs are in the right spots.....

Sigh.... I'm having bad luck these two weeks, I just want my comp to work.......
Any advice would be greatly appreciated. Thanks for reading.

I looked through the list of problems and can't pinpoint it.
I hit the power switch, psu doesn't run, gpu doesn't run, no lights, no fans, nothing. Just dead. Should I take off the gpu and see if it would start on its own, since it has a integrated gpu.

on a side note don't know if this would jack up the psu, when I was pulling the 8 pin out of the dead board, one of the wires did come out of the socket. But I pushed it back in so don't know whats going on now.

More about : sigh start custom built computer

September 11, 2009 9:15:45 AM

^ Check the PSU first...Only if that starts running, then only you can narrow down to other components...
And make sure the plug points are having supply and check for the fuse if any in the PSU...
a b B Homebuilt system
September 11, 2009 10:22:19 AM

Sounds like the wire you pulled loose, is still loose.
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September 11, 2009 12:46:22 PM

Sounds like the PSU to me, just because the fans run dont mean the PSU is good. I bet you old motherboard is alive and well also.
September 11, 2009 4:28:23 PM

Ok I think I found the problem but I am not sure. I took everything apart, and than re-assembled the computer. And this time I plugged in only the 2x12 12v atx connector to the board and the switches. The computer now turns on, but no signal on the screen.

Than I continued with other power plugs on the board, the next one I plugged in was a 2x4 12v atx cable. But once I got that in, the computer doesn't start up. So I unplugged that and the computer starts up again. This board is slightly different from my old set up so I am at a lost. Do I need to plug that 2x4 12v atx cable in?? and what purpose does it serve???

I can start the computer up if I only have the 2x12 12v atx cable in , but it leads me to a blank screen, can't detect signal.

I plugged monitor cable to the integrated gpu and than tried the evga gpu and same thing.

I plugged in the mobo speaker and no beeping noise's either.

Thanks for the helpful information, greatly appreciate it.
September 12, 2009 6:17:01 PM

Alright problem found its the cheap psu.... :sarcastic: 

the 2x4 atx cable and 2x2 cables are jacked up. I tried both on the 2x4 atx slot and no go everytime. Every time both cables were in the 2x4 or 2x2 and the 2x12 was in comp doesn't start, but it starts when only the 2x12 atx cable is in.

So I took out a old psu 280watts. Tested that and the computer booted, but this psu does not provide enough power so I was looking at some psu's at frys.

which one should I get?
Raidmax Volcano 630 Watt Modular Power Supply

Antec EarthWatts 500W Continuous Power Power Supply
September 12, 2009 6:28:28 PM

Well, Raidmax looks better and Antec has higher efficiency... I guess it's up to your preference. They both receive some pretty good reviews, though.
a b B Homebuilt system
September 12, 2009 7:27:25 PM

Get the Antec... Much better PSU and will last longer than the Raidmax. Antec are Tier 1 or Tier 2 PSU's, where Raidmax is more like a Tier 4 or less.