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AMD sapphire 6850 fan maxed out and computer shut off

It happens at random, 1 min after turning on my computer or sometimes many hours after. The displays goes black and drops the signals, then the Video Cards Fan maxs out. Very confused on why this is happening.


i7-2600 CPU @ 3.40 GHz, Sandy Bridge, 4 cores, x86-64, SSE4.2

Mother Board ASUSTek Computer INC. : P8Z68-V LX

16 gig RAM

AMD Sapphire 6850

Any ideas why this is going on? THanks in advance.

The system locks up too, i have to hold the Power Button to shut down.

To clarify my PC stays on, its the Displays that goes black and then the GPUs fan Maxs out.
13 answers Last reply Best Answer
More about sapphire 6850 maxed computer shut
  1. Hi

    What power supply do you have?

  2. Cooler Master 500W RS 500-PCAR-D3
  3. To be honest its not a very good power supply (only 70% efficiency under typical load), so that could be the cause of the issue.

    Any overclocks at all?

    Any clues in event viewer, any bluescreens?
  4. No blue screens, my 2 displays just go black, loose signal and the GPUs fan maxs out. This Event viewer, where can i look at its log? Also no overclocking at all.
  5. its due to the psu (crappermaster)
    so a change is due
    even a corsair cx 430 will do
  6. Best answer
    if you can
    open PC inspect video card, remove make sure all clean and nothing touching it (like loose wire, paper clip) reinstall to be sure its good and secured,

    make sure your power supply cables plugged good, and not loose

    connect one of the other 6 pin cable to video card. (you should have two)

    also can try (if you have adapter) taking power from your 4 pin molex connectors, some lines on your power supply might be failing
  7. I have this problem at times too. I don't know that it's PSU related.

    My PC spec i2600k, EVGA GTX 570, 8gig Ram 1600mhz, Seasonic 750Watt 80plus, 1 bluray drive, 1 80gig SSD drive, 1tb WD black drive.

    Power should be enough and Seasonic is a damn good brand PSU. I'm not sure why my PC still turns off at time when I play graphic heavy game.
  8. it could be due to a poor quality surge protector....

    I have one of those. It's not exactly that model. It has 8 outlets actually. So I don't know what the issue is.
  10. I'm at work now, when I get home I'll
    Do that and see if it happens again.
  11. Moved the video card to the next PCI-E slot and switched out the power cable, so far no system glitches yet.

    I emailed the sapphire tech support and I am set up to receive a new VIdeo card I just have to send it in. Anyone had any experience with this process? And if so how reliable was the service?
  12. Best answer selected by Rblackburn.
  13. This topic has been closed by Mousemonkey
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