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My PC stopped booting up yesterday. When turning it on, you can hear everything powering up (fans working, hd's going, lights on case and mobo etc) - but after 3-6 seconds it turns itself off. After checking all power connections, and trial and error - I established that by removing my GTX 7800 graphics PCI-E card - the system powers up correctly (although i obviously can't see whats going on). When putting the card back in and starting up - the same thing happens and it shuts down almost immediately. This also happens without the gfx card power cable connected. This would indicate to me that it isn't a PSU issue? So I'm now assuming it's either a gfx card issue, or the PCI-E mobo connection. Any ideas which it is more likely to be? (I don't at this stage have a spare PCI-E card to test. Thanks.

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  • bluejazz9 Aug 31, 2008

    My Dell Dimension 8400 dektop has been shutting itself down several seconds after powering up the system. This doesn't happen every time, but it is becoming more frequent lately. Also, about a month ago, I began receiving notices (black screen, white font) saying the the battery was low and that may cause data loss. After appearing several times, the notices disappeared.



    A friend suggested I change the lithium battery; but I hesitate to do so until I get some expert feedback. Will you please help me figure out what to do?



    Thanks.

    michael

    bluejazz9@earthlink.net

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Greetings My name is Mark and I will be glad to assist you. The problem you are having is the compatibility of the Video card and the amount of high memory you have installed. Go back to when the problem started, (new software hardware,Etc,) If this is not the issue you have a card failure and it needs to be replaced. By installing a video card it will use high ram memory in most cases with a graphics card the processor needs to be of greater speed then then video card it is looking at. The key is to maximize you ram and make sure you have proper ventilation for the ram as well as the video card. Heat will cause failure and slow performance. Take care
Be mucho blessed,
Mark

Posted on Aug 10, 2008

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If your motherboard supports SLI, you can most likely eliminate the port the video card is plugged into by plugging it into a different port. Based on my experience the most likely cause is the video card, especially since there are probably other components on the board that share the same bus as the video card. Look carefully however at the pins on the card. I had a "remanufactured" motherboard fry two ram chips and a video card the first time i turned it on.

Posted on Aug 02, 2008

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As you have said you are using the pcie video card, in order to determine if this is damage or not then remove this then use the on board video card. once this boots up then the problem is your pcie video card. this might not properly set up to the slot or it has a defect. try to clean this first with a pencil eraser to its contact points(bronze color) then wipe it with clean cloth make sure that no eraser residues left to prevent short circuit.

Posted on Aug 01, 2008

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Is there a fan on the video card? It could be that the fan on the card has quit working. Most systems will shut down if the chip on the card gets hot. Try to rotate the fan with your finger. Is it hard to rotate or stuck all together. These tiny fans are very inexpensive and since they fail so often they can be found at many office supply retailers.

You may find that it is one of the other fans that is not working too. When you remove the card or the cable the system will not consume as much power. Look also at the main processor chip fan and the power supply fan.

Posted on Aug 01, 2008

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Replace the PCI-E video card. If removing the card causes the system to POST, then it is very likely the card is the fault.

The only concern is CASCADE failure. This occurs when the expansion card damages the slot it is installed in, then when the card is replaced, the slot damages the new card, causing a chain of failures.

You still have a pretty good chance that replacing the video card will resolve without further expense.

Posted on Aug 01, 2008

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