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built a computer, motherboard burning out

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OK, i built a new computer, and it was the 5th one i built, the first 4 i built had no problems at all...and still dont after 1-2 years of use...

Anyway, this one keeps getting the motherboard burned...at first i thought it was the video card thats burning, so i returned it and got another one, didnt work, it was PCI Express, i tried PCI video card, didnt work...i tried the video card from one of my computers that i built that worked and i was currently using, it didnt work...i returned the motherboard and got a new one...it worked on the video that was new, the same one that didnt work on the old motherboard...

So the computer worked fine, for a few hours...i was setting it up...than i tried to fix the clock on the computer and the computer would have been finished...than i got a blue screen and the computer shut down...i couldnt start it up, and while trying some different ways to turn it back on...again, the video card stopped working...but im guessing the motherboard burned out AGAIN...i called the support people letting them know that their motherboard keeps burning out...the motherboard was built somewhere around march of 2008...it only has a few months...its bound to have a few bugs at burning out...but that tech guy blamed it on my computer, saying something might be burning it out, like the power supply or something...

I went to a Best Buy store, and it costs $69 to do a diagnostic test on it...didnt do it...he said to try a different power supply...what im going to do after my THIRD motherboard comes in...i returned the second one...

Anyway, here are the computer specs...

CASE: Apevia X-Cruiser ATX Black Mid-Tower Case with Clear Side, Front USB, Audio and Firewire Ports (Link to case)

POWER SUPPLY: Apevia / Iceberg / 680-Watt / ATX / Dual 80mm Fan / 20/24 Pin / SLI-Ready / SATA-Ready / Blue / Power Supply (Link to power supply)

MOTHERBOARD: MSI K9N SLI-F Motherboard - v2.0, NVIDIA nForce 570 LT SLI, Socket AM2/AM2+, ATX, Audio, PCI Express, Gigabit LAN, USB 2.0, Serial ATA, RAID (Link to motherboard)

CPU/PROCESSOR: AMD Phenom X4 9550 Quad Core Processor HD9550WCJ4BGH - 2.20GHz, 4MB Cache, 1800MHz (3600 MT/s) FSB, Agena, Quad-Core, OEM, Socket AM2+, Processor (Link to cpu/processor)

MEMORY/RAM: OCZ SLI-Ready Edition Dual Channel 2048MB PC6400 DDR2 800MHz Memory (2 x 1024MB) (Link to memory/ram)

COOLING FAN: Thermaltake / TMG A3 / Socket AM2/939/754 / Aluminum Base / CPU Cooler (Link to cooling fan)

HARD DRIVE: Seagate Barracuda 7200.11 ST31000340AS 1TB 7200 RPM 32MB Cache SATA 3.0Gb/s Hard Drive - OEM (Link to hard drive)

GRAPHIC/VIDEO CARD: PNY GeForce 8500 GT / 512MB DDR2 / SLI Ready / PCI Express / Dual Link DVI / VGA / HDTV / Video Card (Link to graphic/video card)

DVD/CD ROM: Sony DRU190A 20X DVD Rewritable Drive - 20x DVD±R, 8 DVD+RW, 6x DVD-R, 8x DVD±R DL, ATAPI/EIDE, Black (Link to dvd/cd rom)

OPERATING SYSTEM: Windows Vista Home Premium

thats all the info...any more info needed?

so my question is why does the motherboard keep burning out??? the graphic card works fine...ive already proved that...the motherboard is new, not even 1 year old...its WAY passed the due date to return, so i cant return it to get a different brand...

next thing i will do it try a used 600W power supply...its actually not that old, i used it on my 2nd computer that i built, than i upgraded it with another power supply, and my old 600W one is just laying around...

Also, on my first 2 computers that i built i used GIGABYTE motherboards, they're working fine...the 3rd and 4th computers i used ATI motherboards, and they are working fine...and the 5th i used MSI, and its breaking down...so thats making me think that the MSI company sucks...but than again, the power supply is 680W, so it might be overpowering the system.

also, when the computer was running, the motherboard had a feature called DOT...i was playing around with it, and turned it up to 5...and left it there...than after the 2nd motherboard burned out, i read that DOT is Dynamic Over-Clocking...but if i was over clocking the CPU/GPU, wouldnt the CPU/GPU burn out and not the motherboard??? but than again, DOT might be over clocking some other feature and burning out the motherboard...

now i bought the case and the power supply as one...so i would still like to use the 680W power supply, but i dont want to risk burning a third motherboard...ive been working on this computer for over 7 months now...if not more...

but again, if the graphics card burned out, and i was over-clocking the CPU, the GPU (Graphics Processing Unit) gets over-clocked too...and the PCI-Express bus was burned out, and not the motherboard...

and im learning more about this as im typing...lol...

so what should i do?

1. Try a 600W power supply and use that?
2. Use the 680W power supply, and reinstall windows since it crashed...and set the DOT to 0?
3. Use the 600W power supply and reinstall windows and set the DOT to 0?

or any other suggestions? im actually building this computer for my cousin...so they are waiting...dont want to have the third motherboard burn out again...

Thank you for reading...
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Neil Jones

Neil Jones

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Burning out boards are usually power supply related. This is not normal behaviour by any stretch of the imagination.
If a board burns out the first thing you do is replace the power supply, not use it again on a second board. The fact its now done the same thing on two boards confirms for me it is a PSU issue. You can never have too much power, better too much than not enough. I have 480w. I've run my system on a 350w previously, no trouble.

With all due respect, the board types, brands, processor types, speeds, wattage and everything else you've listed are irrelevant. There's nothing wrong with MSI boards, the failure rate is no higher than any other brand. Whenever any object is mass produced there are bound to be failures somewhere along the line.

The common factor here is your power supply. Also don't overclock as the extra heat generated can potentially have an effect on the capacitors surrounding the processor socket, as well as shortening the life of the chip itself.
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I agree with Neil, the PSU is shouting out as a potential offender, you are using a cheap nasty PSU and its pretty much the one piece of hardware you should always make sure is a good quality piece of hardware, you always buy better than you think you need when it comes with PSUs and quality matters. YOU NEVER EVER EVER BUY A PSU WITH A CASE, the only exceptions are if the case maker is also a top notch PSU maker and really in that case you are buying a case with your PSU the only company that does this allot is Antec and they are good case and PSU wise. Apevia make cheap nasty cases and use cheap nasty power supplies.

When you try the new PSU do it with the board outside the case and lying on a piece of cardboard, that will ensure its not the case shorting the board out.

The dynamic overclocking on MSI boards is really good some and it won't overclock the board unless it is running at 90+% load and the temps are ok, turn it off to start with but you can enable it to maybe the third level after it is working without making any changes to the board if you want it higher you need to change some voltages. It also has nothing to do with the GPU as the MSI DOT only overclocks memory and CPU not the PCI-e bus. MSI is also one of the better companies in terms of motherboards and their quality, the high end MSI boards actually have quite low RMA rates compared to the other big board makers.
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