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Thread: Mobo failed - new build required

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    Mobo failed - new build required

    Hello,

    My PC just switched off the other day, and wont switch on. I have narrowed it down to the 12V ATX plug (that powers the CPU). When I plug this into the mobo, the PC starts for 2 seconds and then shuts down. Everything I have read suggests this is a mobo failure.

    I built my current PC in Feb 2008, so 6.5 years is not too bad out of that setup. In Feb 2008 I built

    Intel Core 2 Quad Q6600
    Gigabyte GA-P35-DS4 iP35 Socket 775
    4GB DDR-2 RAM
    Gigabyte GTX 460 OC 1GB (this was added in August 2011)

    So I am looking for a new mobo, CPU and RAM only. My budget is about £300.

    I am not interested in overclocking, and I am only a casual gamer (about 5 hours a week) currently playing Bioshock Infinite.

    I am hoping to keep the existing graphics card, PSU 750W, HDDs and ATX size case.

    Any recommendations appreciated.

    How does this look:

    Gigabyte GA-Z97-HD3, Intel Z97, Socket 1150, Motherboard
    Intel Core i5 4460 Quad Core Processor Socket 1150
    Corsair Desktop Memory 8GB (2x4GB) DDR3 1600 MHz


    Many thanks

    Paul
    [xp 2400 @ 133*13.5] [1Gb Twinmos DDR400 CL 2.5] [Abit NF7-s Rev 2.0] [Tagan 480W PSU] [2 x SATA Maxtor 120gb hdd - 1 x 80gb IDE Maxtor hdd - 1 x 80gb IDE Maxtor hdd] [Teac 4x Cdrw] [SonicFury S/C] [LG GSA-4082B DVD+/-RW] [Radeon 9600 np] [Zalman Al-Cu Flower - Arctic silver 3] [windows xp pro 2600 build] [3x 80mm case fans]

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    Re: Mobo failed - new build required

    with my last build, all of the components were purchased form Ebuyer. What websites are good for components?
    [xp 2400 @ 133*13.5] [1Gb Twinmos DDR400 CL 2.5] [Abit NF7-s Rev 2.0] [Tagan 480W PSU] [2 x SATA Maxtor 120gb hdd - 1 x 80gb IDE Maxtor hdd - 1 x 80gb IDE Maxtor hdd] [Teac 4x Cdrw] [SonicFury S/C] [LG GSA-4082B DVD+/-RW] [Radeon 9600 np] [Zalman Al-Cu Flower - Arctic silver 3] [windows xp pro 2600 build] [3x 80mm case fans]

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    root Member DanceswithUnix's Avatar
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    Re: Mobo failed - new build required

    Problem could be with the PSU.

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    Senior Member Pob255's Avatar
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    Re: Mobo failed - new build required

    Yes, what are the details on your psu? make & model

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    Re: Mobo failed - new build required

    My PSU is a 750W made by OCZ, model number ZS750W. Its only 2 years old.

    I will check the output s at the ATX 12V terminals with my multimeter and see what they give.
    [xp 2400 @ 133*13.5] [1Gb Twinmos DDR400 CL 2.5] [Abit NF7-s Rev 2.0] [Tagan 480W PSU] [2 x SATA Maxtor 120gb hdd - 1 x 80gb IDE Maxtor hdd - 1 x 80gb IDE Maxtor hdd] [Teac 4x Cdrw] [SonicFury S/C] [LG GSA-4082B DVD+/-RW] [Radeon 9600 np] [Zalman Al-Cu Flower - Arctic silver 3] [windows xp pro 2600 build] [3x 80mm case fans]

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    Senior Member Pob255's Avatar
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    Re: Mobo failed - new build required

    That psu should be fine, the ZS is a very solid unit, a bit overkill on the power, you could of easily used the 550w model.

    The parts you listed look fine.

    As for where to get them, ebuyer is still ok, however there's a GIANT caveat, it's called Yodel, which is who they currently use for deliveries and because of yodel and their frankly terrible track record, has lost a lot of customers.

    I'll still happily use scan, however amazon seems to have gained a lot of traction atm

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    root Member DanceswithUnix's Avatar
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    Re: Mobo failed - new build required

    Quote Originally Posted by starside View Post
    My PSU is a 750W made by OCZ, model number ZS750W. Its only 2 years old.

    I will check the output s at the ATX 12V terminals with my multimeter and see what they give.
    You need to test them under some load with an oscilloscope to get a good idea, multimeter won't really cut it.

    If you can find another PSU to try, that could be easier and better.

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    Re: Mobo failed - new build required

    The way you describe the problem - i.e. starts for a couple of seconds then dies, sounds much like the issue I had with my new build. I also had the issue that it wouldn't do that two second starting burp again until I'd switched off the PSU and allowed its charge to dissipate. Although I thought it was the board at first the issue was the PSU, which was a Corsair CS750X - a solid piece of kit normally. I verified it by finding an old PSU with ATX power plugs and booting the mobo with it, showing the board to be fine. When taken back on RSA, Scan reported it as dead on arrival - so, don't rule out the PSU just yet!

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    Re: Mobo failed - new build required

    I'd clear the CMOS and then try it, you might get lucky.

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    Re: Mobo failed - new build required

    Thanks for the replies. I 'bread boarded' the PC this evening. I checked all voltages of the PSU, and they are fine.

    Then I realised that the mobo and PSU will remain powered with the CPU removed, but not when the CPU is installed. Could this really be a failed CPU?

    I might buy a cheapo second had socket 775 CPU as a little experiment.
    [xp 2400 @ 133*13.5] [1Gb Twinmos DDR400 CL 2.5] [Abit NF7-s Rev 2.0] [Tagan 480W PSU] [2 x SATA Maxtor 120gb hdd - 1 x 80gb IDE Maxtor hdd - 1 x 80gb IDE Maxtor hdd] [Teac 4x Cdrw] [SonicFury S/C] [LG GSA-4082B DVD+/-RW] [Radeon 9600 np] [Zalman Al-Cu Flower - Arctic silver 3] [windows xp pro 2600 build] [3x 80mm case fans]

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    Re: Mobo failed - new build required

    Quote Originally Posted by starside View Post
    Thanks for the replies. I 'bread boarded' the PC this evening. I checked all voltages of the PSU, and they are fine.

    Then I realised that the mobo and PSU will remain powered with the CPU removed, but not when the CPU is installed. Could this really be a failed CPU?

    I might buy a cheapo second had socket 775 CPU as a little experiment.
    Honestly clear the CMOS, I had two issues not long ago with power supplies and motherboards and it fixed it both times.


    The first was a machine that booted with one psu but not another, clearing the cmos made it boot with both (weird right?)
    The second was a psu that kept supplying the motherboard and fans, gpu e.t.c with power after the pc shut down, clearing cmos fixed that also.
    It really is worth a try

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    Re: Mobo failed - new build required

    I have already tried clearing the CMOS by removal of the battery and shorting the CMOS reset pins. I ordered a socket 775 CPU from eBay for the grand total of £3.99. I will report back once I have tried a different CPU.

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    Senior Member Bonebreaker777's Avatar
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    Re: Mobo failed - new build required

    Quote Originally Posted by starside View Post
    I have already tried clearing the CMOS by removal of the battery and shorting the CMOS reset pins. I ordered a socket 775 CPU from eBay for the grand total of £3.99. I will report back once I have tried a different CPU.
    Good luck.

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