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New computer build trouble

VishNubVishNub Registered User regular
edited March 2010 in Help / Advice Forum
So, I'm having some trouble with a new computer that I bought/built in the last couple of days.

ASUS M4A785TD-V EVO AM3 AMD 785G HDMI ATX AMD Motherboard -
G.SKILL Ripjaws Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800)
SAPPHIRE 100283L Radeon HD 5770
LITE-ON Black 4X
Western Digital Caviar Black
AMD Phenom II X2 550 Black Edition

Basically, it freezes up during and sometimes before POSTing, as well as periodically while browsing the bios. But not every time I start it up, so I've managed to get it set up and windows installed. Once it gets past POST, as far as I can tell it's completely stable, though I haven't stress tested it at all yet. CPU temps are stable at <35 degrees.

I've tried flashing the bios to the newest version from the Asus website, which hasn't fixed it. I'm not sure what the issue is with it. I'm inclined to say that it's a bad motherboard, as I'm not sure what else could be causing problems during that particular part of boot up without affecting anything once it gets booted up.

Another possible problem is that that motherboard normally uses ddr3 1333 while mine is ddr3 1600. As far as I know that should just mean that the memory underclocks itself, but maybe that's not true anymore.

Last thing I've though of is that maybe the onboard video is fighting with the gfx card, as I haven't been able to figure out how to disable it.

So, any other ideas? I can RMA any of it, if I have to, but i'd like to try anything I can do here first.

VishNub on


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    blakfeldblakfeld Registered User regular
    edited March 2010
    Generally anytime you're having posting issues, RAM should be the first thing you try. Video would be second, although I wouldn't think that would cause it.

    The RAM underclocking SHOULDNT be an issue, at least not that I'm aware. See if it doesn it with just one stick.


    AH ha! I googled your video card, it looks like it requires a minimum of a 450w PSU, that MAY be your issue

    blakfeld on
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    Captain VashCaptain Vash Registered User regular
    edited March 2010
    Power would be my first guess in this build as well.

    Got any computer games? see if you can get that card running, and see if that causes shut down.

    Captain Vash on
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    MindLibMindLib Registered User regular
    edited March 2010
    I concur, a power issue.

    MindLib on
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    samsam7samsam7 Registered User regular
    edited March 2010
    If you're not posting, its probably either ram, cpu, or mobo. Even if the video card is a power hog, the corsair supply should be able to handle it since it's not under load (and corsairs normally handle more than they are rated on the box so corsair can claim a high efficiency rating).

    Try one stick of ram at a time to start. You might find that one will work and one wont, in which case you just have defective ram.

    Edit: Just looked up the card, newegg says it needs 450watts, but pretty much everywhere else, including Sapphire, says its about 100watts so its probably not the PSU.

    samsam7 on
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