Make a memtest boot disk or USB flash & let it run overnight.
On Jan 30, 2012 3:24 PM, "Winterlight" <[email protected]> wrote:

> I have a problem with my workstation.
>
> Q4 9650 over clocked to  3450 on a Asus Maximum II Formula board
> 16 GB 4X4 of Patriot DDR2
> Two Sapphire 5770 hooked up for crossfire  one running three monitors and
> one sitting idling. ... and I haven't played a game for more then 5
> miniutes since I set this up!
> Intel SSD and Windows 7 Pro fully patched.
>
> I have been running stable for a year. then a last week I have a
> spontaneous reboot and shortly thereafter a blue screen lock. Right away I
> think RAM, but a series of failures occur that point to the video card. I
> start getting video artifacts followed by freeze ups, blue screens, locks,
> and the <video card driver has failed and recovered warnings>. There is no
> heat inside the well ventilated computer. It is not even running warm. All
> the fans are working correctly. I suspect the video card so last night I
> remove the card used for the three monitors and all the crossfire ribbon
> cables and  now I am running off the second video card with the latest
> video drivers.
>
> Everything is good until about an hour ago when I had a video artifact
>  quickly followed by a lock. It can't be both video cards. It must be the
> RAM. I pull out three of four 4 meg Dimms and now have one installed. I
> thought I would try to find the bad one by a process of elimination but
> that could take a couple of weeks to run each one for a couple of days, so
> I am wondering how good Memtest is ... does it really work...and what
> version I should use and how should I go about testing each of the Dimms.
>
> I have high end quality components. My board was made with overclocking in
> mind. But is there anyway my overclocking could of brought this on? Thanks
>
>

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