Graphics card crashing and strange startup

I put this under the systems category because I don't know if this is the fault of my mobo, graphics card, CPU, or power supply, but this is a homebuilt system.

Every now and then my screen will go completely blank, the graphics card fan will go to 100% and I have to hold the power button to get my computer to turn off. This happens at odd times, but it usually happens when I'm on the computer, and when I'm watching a movie or playing a game, or at any odd time. I haven't been able to detect a real pattern yet. It recently happened while I was in a skype voice session and I could still hear the conversation for a few seconds after the screen went blank, but then I couldn't anymore.

Another strange problem I've been having is that when I try to turn the computer on I can hear the sounds of it turning on, but neither my CPU nor graphics card get power. My power supply fan is on, and my motherboard gets power because the lights on it come on. If I jiggle the 20 pin power connector to the motherboard then it will usually kick everything back into gear and come on. I've recently tried blowing it out, and I got a good amount of dust out, so I don't know if that's the issue.

Anyway, here are the system specs:

OS Name Microsoft Windows 7 Home Premium
Version 6.1.7601 Service Pack 1 Build 7601

Processor AMD Phenom(tm) II X4 965 Processor, 3400 Mhz, 4 Core(s), 4 Logical Processor(s)

Installed Physical Memory (RAM) 4.00 GB

BIOS Version/Date American Megatrends Inc. P1.40, 4/23/2010

Name ATI Radeon HD 5800 Series
PNP Device ID PCI\VEN_1002&DEV_6899&SUBSYS_E140174B&REV_00\4&C6A1C42&0&0010
Adapter Type ATI display adapter (0x6899), Advanced Micro Devices, Inc. compatible
Adapter Description ATI Radeon HD 5800 Series
Adapter RAM 1.00 GB (1,073,741,824 bytes)
Installed Drivers aticfx64.dll,aticfx64.dll,aticfx64.dll,aticfx32,aticfx32,aticfx32,atiumd64.dll,atidxx64.dll,atidxx64.dll,atiumdag,atidxx32,atidxx32,atiumdva,atiumd6a.cap,atitmm64.dll
Driver Version 8.881.0.0
Driver Packaging Version 8.881-110728a-124445C-ATI
Catalyst Version 11.8
Provider ATI Technologies Inc.
2D Driver Version
2D Driver File Path /REGISTRY/MACHINE/SYSTEM/ControlSet001/Control/CLASS/{4D36E968-E325-11CE-BFC1-08002BE10318}/0000
Direct3D Version
OpenGL Version
AMD VISION Engine Control Center Version 2011.0728.1756.30366
AMD Audio Driver Version

Let me know if you need any more info, and thanks in advance for any help you can provide.
5 answers Last reply
More about graphics card crashing strange startup
  1. what power supply are you using ?
  2. Outlander_04 said:
    what power supply are you using ?

    corsair tx750w
  3. Quote:
    Try resetting the cmos battery (little watch battery on the mobo next to the gpu)

    Take it out for 1 min and put it back in, make sure everything is hooked up, ram is seating, no connections are loose.

    is the 24pin power cable completely seated? Do you have any extra standoffs behind the mobo that shouldn't be there? For example, when you screw your motherboard down you put the standoffs on the metal then you screw it in without skipping a screw. Well sometimes if you have an extra standoff behind the mobo that doesn't go to a screw hole it can cause another issue.

    Not sure exactly what needs to be done, just throwing out a few ideas, but do you have another graphics card you could test in the machine?

    I'll try the cmos battery and double check all my connections. I'll also check behind the motherboard when I next get a chance to turn it off. Unofortunately, I don't think either of those things are the problem. Either way, thanks for the ideas, I'll surely try them. I don't have any other graphics cards, and it doesn't do it all the time. It really only does it once every 3 or 4 days. So I'm scared to leave it on for that reason, and I'm scared to turn it off because it sometimes doesn't come back on... silly computer.
  4. Best answer selected by jbf81tb.
  5. I just wanted to give an update on this.

    It appears that I had at least one fault RAM slot. It got to the point where it would no longer boot, the fans would just start and restart I I kept getting a d3 on my motherboard's (ASRock 890FX Deluxe 3) "Dr. Debug" so I decided to try a different slot and it now works. I'm currently testing my memory to make sure it's fine, but I think it is, because I tried both sticks in that slot and got the same result. It also appears that I have a bad slot in one of my other dual channel modes, so now I'm stuck on single channel, which is quite sad, but at least I still have my 2x2GB.

    I don't know if there's any one who will respond to this, but is there a way to specifically test if I have a bad RAM slot?

    Thanks again!
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