New setup help

jonnyg · 9 Oct 2006 at 14:42

Hello,

Got some major problems here.

Recently bought these components to upgrade my exsisting computer:

Pentium D 820
MSI 975X Platinum PE
1Gb OCZ PC2-6400
3DFuzion 7600GT
Seasonic 430W PSU

Everything else thats standard is already there HDD, CD etc

Upon creating this beast, i discover that upon powering the system, all the fans whirr into life and after about 5 seconds, the system shuts down and restarts. Nothing appears on the screen, and the only indication to the failure i get is an LED on the back that states the systems loses power as the chipset is initialised. Me and my mate have had a good look and i believe that (after a lengthy process of elimination) that it could be a fault with the RAM.

I have already sent a motherboard back, but the new one (exact replacement, same model) suffers from the same downfall.

Can anyone suggest a reason as to why this is happening? Please dont leave out seemingly obvious things that we may have overlooked

Many thanks.
John

wizardmaxx · 9 Oct 2006 at 14:44

What happens when you start the pc without ram in and have you tried resetting the bios?

BillytheImpaler · 9 Oct 2006 at 14:46

Well, first off are you 100% sure you've connected all the power leads to the motherboard, especially the "P4" 4-pin lead that is separate from the 20 or 24-pin ATX lead? That would cause what you're describing.

Also, is there any RAM you can take from a working machine with which you can test?

jonnyg · 9 Oct 2006 at 14:50

We've tried resetting the BIOS, but havent tried without RAM. currently doing a complete rebuild, in an attempt to cover anything we may have missed.

Still suspecting the RAM...

BillytheImpaler · 9 Oct 2006 at 14:53

wizardmaxx said:
What happens when you start the pc without ram in and have you tried resetting the bios?

Without RAM it won't do anything. In order to absolve the RAM he has from guilt he must test with RAM that is established as being non-faulty.

jonnyg · 9 Oct 2006 at 14:58

We think we can find someone who has some DDR2 near us. We were going to try that once its back together.

jonnyg · 9 Oct 2006 at 15:05

BillytheImpaler said:
Well, first off are you 100% sure you've connected all the power leads to the motherboard, especially the "P4" 4-pin lead that is separate from the 20 or 24-pin ATX lead? That would cause what you're describing.

Also, is there any RAM you can take from a working machine with which you can test?

I missed this reply, sorry.

We only have DDR RAM from the working rig. It wont work.

The 24-pin ATX lead is connected, and so it the 8-pin Intel lead that is for dual-core boards. The board originally came with a blanking plate for the 4 sockets that are connected to the same socket, but the PSU had a 4-pin and an 8-pin connector, so i naturally went with the 8-pin...

wizardmaxx · 9 Oct 2006 at 15:20

BillytheImpaler said:
Without RAM it won't do anything. In order to absolve the RAM he has from guilt he must test with RAM that is established as being non-faulty.

Granted, just wanted to ensure it actually gets to the point of initiatising the memory. If it doesn't respond with beeps with the memory out then the problem may be elsewhere (ie motherboard).

jonnyg · 9 Oct 2006 at 15:38

Right got an update. We have removed the Motherboard etc completly out of the case re installed it with only GFX card, CPU and RAM. We have tried both sticks of RAM seperatly and together in both sets of DIMM slots. Tried a different PSU. We have also tried without RAM (No warning sounds or lights given) without GFX Card therefore meaning the ONLY thing I can think of is CPU as this is the second Motherboard. We have also tried clearing the CMOS.

Unless you have any further suggestions I can only see it being another DOA motherboard or a dead CPU as it doesnt even reckonise (give a warning) the RAM or GFX card being removed.

PLEASE any ideas welcome!

wizardmaxx · 9 Oct 2006 at 15:41

Usually no beeps means psu or mobo. Without trying a different cpu...stumped

No beeps could means speaker bust. :rolleyes:

jonnyg · 9 Oct 2006 at 15:49

right just tried 2 PSU's one for the molex fans and the molex on the mobo and the other powering the cpu. then reversed the psu's to try that

One is a Tagan 480W and the other is a seasonic 430W so between them they should be able to do the job.

No luck still no beeps, nothing on the display and..... Keyboard lights do not initialize in the usb of ps2 port

keeps comming back to mobo or cpu i thinks

wizardmaxx · 9 Oct 2006 at 15:51

Is the cpu fan one of the 'molex' ones you refer too

jonnyg · 9 Oct 2006 at 15:59

4 pin on the motherboard - fans i ment the case fans sorry

if its easier [email protected] (msn messenger)

wizardmaxx · 9 Oct 2006 at 16:02

It probably long shot, but some mobos wont startup if they dont have cpu fan plugged into cpu fan connector on mobo. From what u tried so far dont think its that, but running out of ideas.

jonnyg · 9 Oct 2006 at 16:06

nope no luck im guessin CPU cant think of nething else

wizardmaxx · 9 Oct 2006 at 16:07

I still reakon its the mobo if no beeps, or speakers bust.

jonnyg · 9 Oct 2006 at 16:12

norm the mobo makes some ahahah im dying beeps thou whereas if its the cpu it doesnt does it?

wizardmaxx · 9 Oct 2006 at 16:16

Depends on the bios, typical AMI bios gives 7 beeps if cpu faulty. All different though.

Banzai_Joe · 9 Oct 2006 at 16:42

When you connect it up bare bones, are you connecting the case fans as well?
I had almost the exact same problem. After pratting around for ages, i disconnected the ceiling case fan, and hey presto it all worked. So i just left it disconnected, as the other 2 case fans were fine.
I put it down to psu not supplying constant regular voltage to all components, and i did swap it after a short while for a new one.

If its cpu i would have expected it to last a little longer before shutting off.

edit: i had another pc do the same last week, shutting off after about 3-5 secs.
Booted it up today and it failed posts with ram errors but stayed on. Ram was filthy so i took it out, cleaned it, reseated it and voila everything worked again.
My point is, the symptons were random at first, so its hard to pinpoint the problem.

jonnyg · 22 Oct 2006 at 15:20

I've come to the edge of what i can bear with this. Its disrupting my studies at uni as well. Im going to buy 1Gb of RAM and a new more powerful Tagan PSU. If that wont fix it. Then i guess ill have to make do with my current PC until i can be bothered to waste half my life trying to fix a computer with no apparant problem.

GRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRARGH!

New setup help

Man of Honour

Man of Honour