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Hardware Thread, New gaming rig keep powering off :( in Technical; Hi, I've just completed my new build and here are the specs: Asus GTX470 1280MB GDDR5 PCI-E Graphics Card Samsung ...
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    BassTech's Avatar
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    Unhappy New gaming rig keep powering off :(

    Hi, I've just completed my new build and here are the specs:

    Asus GTX470 1280MB GDDR5 PCI-E Graphics Card
    Samsung HD103SJ 1TB Hard Drive - 7200rpm 32MB Cache (SATA)
    8GB (4x2GB) DDR3 1333MHz RAM @ 1.65v
    AMD Phenom II X6 1055T 2.8GHz 9MB Cache (AM3)
    Powercool 550W PSU
    Asus M4A785TD-V EVO 785G Motherboard
    Arctic Cooling CPU Freezer 7 Pro
    Samsung SH-B083L 8x Blu-Ray player
    Windows 7 Ultimate x64

    The PC just randomly powers off, even when doing simple tasks such as browsing the net. I had to wait about 1 minute and then I could turn it back on but now it won't power on at all.

    I have tried taking out the graphics card and RAM but still no power. The motherboard has a green light so there is some power getting through. All the fans work fine as well.
    I think that the 550W PSU may not be capable of running my spec so I've ordered an 850W one. Is there anything I can try in the meantime to power my PC on?

    Many thanks,

    Lee

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    nephilim's Avatar
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    the 550W is not enough to run that...the 850W should be enough.

    not much you can do in the meantime though

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    Removing the graphics card and using the onboard one should be fine with a 550W PSU.

    Unplug the Graphics Card, BluRay and run on a single stick of RAM to see if it fires up.

    I don't think it's quite as straight forward as not enough juice if even with the card removed it won't fire up.

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    synaesthesia's Avatar
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    Being quite blunt, had you ordered a sensible graphics card that PSU would be plenty. However, being the most important part of the PC, it's best to stick with decent ones - PowerCool is not a manufacture I'd lump in teh "decent" bunch. Those particular Nvidia graphics cards are too power hungry as it is.

    But to the main issue - if it randomly powered down and won't turn back on, something's blown. Was the heatsink correctly attached? Any odd smells in the case?
    Take everything out of the case and run it separately to eliminate the possibility of electrical shorts on the case. Also definitely try and get hold of another PSU (even if it's vastly underpowered) to rule yours out. Did you have both PSU cables plugged into the main board? (24pin and 8pin) ?

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    Got to also be worth checking CPU temps and that sort of thing - CPUID - System & hardware benchmark, monitoring, reporting - really good monitoring tool!

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    BassTech's Avatar
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    Quote Originally Posted by Andrew_Sharrad View Post
    Got to also be worth checking CPU temps and that sort of thing - CPUID - System & hardware benchmark, monitoring, reporting - really good monitoring tool!
    Ironically, I was in the process of downloading this when it powered off I Haven't been able to turn it on since, however I checked the BIOS on first boot up and all the temps were fine, my new 850w PSU is coming tomorrow so hopefully that will bring the beasty back to life

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    my new 850w PSU is coming tomorrow
    My suggestion doesn't require a new PSU for testing.

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    BassTech's Avatar
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    Quote Originally Posted by kmount View Post
    My suggestion doesn't require a new PSU for testing.
    I've done that and still no power. Personally, I think the power pack has blown because it was under too much stress.

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    synaesthesia's Avatar
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    I just hope its a good quality 850watt one. Brand quality means more than wattage. For instance, a branded (i.e. corsair/seasonic, pcp&c etc) psu of 500w will be absolutely fine with that setup, whereas a 900w Q-Tec branded one will fall over and die, probably taking half of your PC with it.

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    BassTech's Avatar
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    Quote Originally Posted by synaesthesia View Post
    I just hope its a good quality 850watt one. Brand quality means more than wattage. For instance, a branded (i.e. corsair/seasonic, pcp&c etc) psu of 500w will be absolutely fine with that setup, whereas a 900w Q-Tec branded one will fall over and die, probably taking half of your PC with it.
    It's this one - OCZ GameXStream 850W PSU - Silent 120mm Blue LED Fan.. | Ebuyer.com

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    synaesthesia's Avatar
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    Should be fine, that's most likely a PC Power and Cooling made one.

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    sounds like a heat issue to me... check the amount of thermal paste on the cpu is correct... BTW mobo temp sensors can be about 10deg off at times!

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    BassTech's Avatar
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    Quote Originally Posted by hotwired007 View Post
    sounds like a heat issue to me... check the amount of thermal paste on the cpu is correct... BTW mobo temp sensors can be about 10deg off at times!
    There was quite a lot of thermal paste on the CPU, maybe a touch too much. Can too much cause it to power off?

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    Quote Originally Posted by Lee91 View Post
    There was quite a lot of thermal paste on the CPU, maybe a touch too much. Can too much cause it to power off?
    Too much can cause the heat to build up rather than escape... then depending on your cpu the overheat protection will switch it off...

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    could also be a dodgy ram stick... try running memtest86...

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