*update* system won't boot, faulty motherboard

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Bernard0807

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Sep 13, 2013
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My last post was redicously long, so I'll make this short
System wouldn't post, no moniter display or keyboard power
I followed trouble shooting guide and breadboarded the system, would get 6 beeps with no ram in just cpu, hs and psu. Plug ram in and nothing, not series of beeps or single beep, just silence, tried two other know working psu, nothing, my psu booted another pc up.
I'm 80% sure the motherboard is faulty, unless it could be the cpu, but Iv read that a faulty cpu wouldn't produce beeps for 'no ram detected'

Any advice would be appreciated?
Thanks in advance
 
Solution
M
if you bread boarded it and it wont boot and you proven your psu works it comes down to short list

1 cpu bad
2 motherboard bad or bios/cmos bad which means motherboards bad (you did try to reset cmos right?)
3 bad ram or incompatible (still possible but not likely bad based off of your notes. incompatible more likely then bad)

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Bernard0807

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Tried one stick, in left slot, then in right
Motherboard is a gigabyte 78lmt s2p, cpu athlon ii x2 2.9ghz, ram is mt 2x4gb ddr3 1333mhz, Iv contacted the seller to try and rma the board but just wanted some opinions incase I missed anything
 
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maxwellmelon

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if you bread boarded it and it wont boot and you proven your psu works it comes down to short list

1 cpu bad
2 motherboard bad or bios/cmos bad which means motherboards bad (you did try to reset cmos right?)
3 bad ram or incompatible (still possible but not likely bad based off of your notes. incompatible more likely then bad)

end of list
 
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Bernard0807

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I thought it wouldn't post at all if the cpu was bad (I read in a thread on here)

Haven't tried resetting the bios as it's a fresh out the box board, il give it a try tho.

I'm sure the ram is compatible, the board can take up to 1800mhz when overlooked but by default maximum is 1333mhz on the specification page on gigabytes site
 
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Bernard0807

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Resetting the CMOS didn't sort the issue, no successful post beep nor signal to monitor.
Wen I was building the system I noticed some fluff between two pins on the cpu, not want to blow it by mouth (moisture) I used a can of air, only the frozen like gas came out and landed on the cpu, could that have killed it?
 
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maxwellmelon

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is there any sign that its trying to read hard drive or looking for a cd drive to boot (activity lights flashing about 5-10sec after pushing button)? if its doing that stuff then you could have a bad video card or to the monitor connection. are keyboards lights flashing once?

you don't have a parts list on this post if you could, mabe a link to last thread so we can see what you have done so far.
 
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Bernard0807

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I'm using the onboard vga, if I plug a gfx card in but with no PCI power 6 pin it doesn't post beep codes so is the bios defaulting to the onboard gfx? Can't get Into the bios to change that as it's not successfully posting (silence, just fans spin on heatsink, psu and the video card if it's installed)
Keyboard doesn't flash if it plugged in when I power up, but if I unplug it and plug It back in the numlock caps lock light flashes once

I edited the original thread into this one, I can repost what I put but it's rather lengthy
System specs:
Gigabyte ga 78lmt s2p motherboard
Athlon ii x2 2.9ghz (245)
Mt 2x4gb ddr3 1333mhz
Seagate pipeline 2.0 500gb 3.5 sata
Sapphire hd 5750 1gb
The hdd is blank as I formatted it for a new os, but with it all installed and the disc in the disc drive I could hear clicks like the drive was trying to run the cd but with no display from both onboard and dedicated gfx and no single beep I assume it never passed the motherboard manufacture screen, I know the hdd and gfx card works as tried them In my friends pc who let me borrow there psu, only thing I can't test is the cpu as don't have a known working am3 motherboard and can't test my motherboard as I don't have an am3 known working cpu, the local pc shop down road charge £60 pound just to test, and I fear they will try to rip me off :D
 
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Bernard0807

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So Iv booked it into another local pc shop, he's going to test the motherboard cpu and ram and he only charges £35, I will edit this when I find out what's wrong and pick a best answer, thanks for your help guys
 
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