New Build Won't boot, PSU Definitley Works

Tiamat

Tiamat

Tiamat

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Joined
9 Feb 2009
Posts
33
I bought these parts last week;

Phenom II x4 940 (AM2+)
Gigabyte MA790-UD4
2x2Gb G.Skill (2.0v-2.1v)
HD4890 1Gb
x2 WD Caviar Black 640Gb

I am using same PSU from my last build, an OCZ GameXstream 700W.

Basically I've put the system together and either nothing will work or a couple of fans will spin...randomly...but the system will not boot. The PSU is supposed to glow blue at the back (tacky LED) when it is running properly but when I hit the power switch it stays dark and just emits a quiet buzz.

The PSU defintely works, as I am using it right now to run this old system outside of my case. I have a couple of ideas; like my motherboard officially supports "4 x 1.8v DDR2 Modules" and my G.Skill is rated at 2.0v-2.1v. Could this default lack of juice actually cause the system to not even boot? I was assured that all I would need to do would be to enter the bios and increase the memory voltages.

Anyway, my other idea is something to do with the 12v ATX power connectors. This PSU hs 2x 4 Pin 12V power connectors which are supposed to go together in the 8-Pin ATX 12V socket on the board near the CPU....but in the manual it says when using 2 x 4Pin that you should remove the protective covers from the connectors and the socket on the motherboard. I have to say, these seems really unwise, considering they fit in as it is.

Anyone have any ideas? I'm at a loss.
 
I would remove said covers just in case...u never know...it might just work...I know its far fetched but trust me in the world of custom builds...stranger things have happened...and also try just with the PSU to the motherboard and nothing else...no HDD or DVD drive connected...
 
I suppose I could, I don't see a way to do it without ripping the wire heads from the plastic cover though and pretty much bricking a PSU though.
 
Try removing the plastic plug over the other 4 pins and insert the other 4 pin Psu power lead.
 
RJC said:
Try removing the plastic plug over the other 4 pins and insert the other 4 pin Psu power lead.
Click to expand...

Both of the 4 pin 12V connectors fit into the 8 Pin socket near the CPU, which is why I am wary of doing it...it doesn't make any sense. I tried anyway and just ended up cutting my hand to shreds.
 
The extra 4 pins supply extra power to the cpu, I use the 8 pins on all my machines (not sure if you already that, ignor if do :) )

The heatsinks can be pretty lethal, I have lost count how many I have cut my hands/fingers.
 
Remove the ram bar one stick, make sure no other devices are installed only the basics ie gpu, cpu, 1 hd ect. Do a CMOS reset and see how you get on.

(You have the 24 pin ATX connector installed firmly)
 
This may seem a little obvious, but have you made sure the Graphics card is full inserted into the PCI-E slot, new motherboards can be a bit stiff, if it's not fully in it can have the result you have now.
 
As above but with the CPU Cooler. Had the same problem this morning. is it a "rock solid" fit, even when you give it a wee pull, or is it even the slightest bit loose?

The best advice I got was deffo just seating only the GFX card, CPU and the memory on the mobo and powering them up.
 
Sasahara said:
This may seem a little obvious, but have you made sure the Graphics card is full inserted into the PCI-E slot, new motherboards can be a bit stiff, if it's not fully in it can have the result you have now.
Click to expand...

Yeah, that was one of the first things I thought of.
 
Bonusbertie said:
As above but with the CPU Cooler. Had the same problem this morning. is it a "rock solid" fit, even when you give it a wee pull, or is it even the slightest bit loose?

The best advice I got was deffo just seating only the GFX card, CPU and the memory on the mobo and powering them up.
Click to expand...

I've been trying combinations of everything people have suggested, all cables, power connectors, ATX connectors, and devices seated correctly. Heatsink doesn't budge a mm when pulled.

The only activity I can get out of this at the moment is an active GPU fan, CPU HS Fan (sometimes), and the blue light from my PSU flickering(or it just stays off) as if it is struggling to light properly, but as I said, the PSU is perfectly fine, it's running this system right now.

It's starting to look like I have a dud motherboard.

Come to think of it this is similar to what happened when a CMOS clear (haven't tried this on this board) went **** up on my DFI board years ago.
 
Just wanted to let you guys know I have solved the problem.

Turns out the motherboard was in fact DOA. I got impatient and ordered a new GA MA790X-UD4 which worked first time. I have RMA'd the faulty one I had originally and will probably eBay whatever I get back.

Thanks for any and all of your suggestions.

I'm now in the process of getting my X-Fi working on Vista x64. Wish me luck :(
 
Tiamat said:
Just wanted to let you guys know I have solved the problem.

Turns out the motherboard was in fact DOA. I got impatient and ordered a new GA MA790X-UD4 which worked first time. I have RMA'd the faulty one I had originally and will probably eBay whatever I get back.

Thanks for any and all of your suggestions.

I'm now in the process of getting my X-Fi working on Vista x64. Wish me luck :(
Click to expand...

My X-fi worked fine on vista x64. :eek:
 
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