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Ati 4870 installed - random shut down

Last response: in Graphics & Displays
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a b U Graphics card
August 4, 2008 6:58:20 AM

I recently bought an ATI 4870 and I works great, except...this morning my computer just shut down with no reason. I wasn't gaming and all my temps were within the specs (highest CPU core temp 42 C - monitored with SpeedFan and RealTemp - the difference is 2 degrees; card temp - idle - 43 C, under load 56 - fan speed set to 45%). The power supply is an OCZ StealthXtream 600W and is ATI certified. When I tried to turn on the computer the monitor wouldn't turn on. So I shut down the power supply and tried to start it. At first it tried to power on but shut down again and tried to start again on its own. It did this 2 times and then correctly started. Do you think its something wrong with the card, or the power supply? (Sorry if this is the wrong forum)
August 4, 2008 7:05:00 AM

I had the same problem years ago and found out it was the power supply. Wasn't getting enough juice to the card and then it finally died.
a b U Graphics card
August 4, 2008 7:18:00 AM

If it were the power supply dont you think I would have shut down during gameplay? I played Crysis , UT3, Devil May Cry 4 for hours with no incident whatsoever. The computer shut down when idle...
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August 4, 2008 7:36:03 AM

I know this sounds weird. I have a Sapphire HD4370.
I experienced random shut downs when my computer was idle and switched to screensaver.

I went through the errors listed in "event viewer" and I found nothing suspicious. Except an IOCBIOS error. I couldn't find anything about IOCBIOS using Google, searching MS error code database and searching the Intel driver database for IOCBIOS.
So I reinstalled the INF chipset driver for my motherboard and since I did that so far I haven't experienced a random shutdown.

Personally I'm biased against OCZ. I have experienced many problems with OCZ products. My atitude toward OCZ is their hardware sounds great on paper but the products don't measure up to their paper profiles.
August 4, 2008 7:54:56 AM

oooo weird problem! just lupi's type of thing :o 
August 4, 2008 8:14:58 AM

Check your Windows logs. If something went wrong it'll be in there.
a b U Graphics card
August 4, 2008 8:18:12 AM

I checked, but forgot to mention in the original post. The only thing it says is that there was an unexpected shutdown.
August 4, 2008 11:58:57 AM

Perhaps I should reinstall my chipset drivers too then!
Since upgrading to the sapphire 4870 my raid 1 system has had frequent ntfs errors (jmicron chip), and gigabyte tells me that everything in my system should work just fine together,and i should check my harddrives for errors. They're fine, but the system keeps creating filesystem errors after upgrading .....

ps. ocz is fine - it's not top notch, but their stuff usually works. First time I bought something from them was back in 2001 when they supplied voltmodded abit motherboards with unlocked thunderbirds ....
August 4, 2008 12:11:12 PM

If a system just shuts down, without notice, I would place my bet on a faulty PSU.
August 4, 2008 12:11:48 PM

It could be your memory, I had this promblem where It shut down and didn't reboot till I removed some of my memory and it booted again. It could be your PSU since it is sorta old.
a b U Graphics card
August 4, 2008 2:37:56 PM

The PSU is 8 months old :)  . I do not think that is the problem.
September 8, 2009 6:04:01 PM

The Q6600 Processor was my problem "random shut downs" normally after 2-3 days. I replaced 2 hard drives, 1 power supply, 2 mother boards, 2 graphic cards, and one case (thought it was grounding out). It took me over 15 months to figure this out. It seems the 1% (NewEgg comments) of those who do not love this processor experienced the exact same problems. Always the last part before you torch your entire system and the least likely. Intel is in the process of replacing it, but talk about a great deal of time and money to figure it out.
!