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Video card dead?

By ngen255 ·
Hey, recently I had problems with my motherboard not booting, and now I've noticed that my video card's fan isn't working. My PSU is fine, so I'm wondering if my vid card is dead? If my motherboard is fried, will my video card not work? I have a MSI Geforce 6600GT AGP, with a 550W PSU, with a Gigabyte GA-7vt600-L motherboard. Every other component is working fine, and I've narrowed down my problem with not booting (no beeping or anything) to either my mobo or my cpu. Everything was working fine until one day when I came home from school and found my comp in it's present situation. I really really hope it's not my vid card that's the problem...but if it is, I'm probably just going to buy a new mobo/cpu with a PCI-E card

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by TheChas In reply to Video card dead?

First a question, how do you know that your power supply and the rest of the components of your system are fine?

If you are basing your assumption of operation on seeing the power supply fans run, and the drives perform their POST, that is only a partial check.
You need to verify ALL of the voltages that the power supply generates are at their correct levels under a load.

As to the fan on the video card, it depends on how and where it gets it's power from as to if it is dead or some other part is dead.

Do the blades of the video card fan spin freely when you spin them by hand?
If not, it is possible that the bearings in the fan failed causing the GPU to overheat and the video card is now locking up the system bus.

It is just as possible that a failure of a power regulator on the motherboard is the cause.

Look at the motherboard and video card for burnt, bulging or leaking components. If you find any, that is a clear indication of what has failed.

Otherwise, you need to try the CPU and video card in a different motherboard to verify if they are working.


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by ngen255 In reply to

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by mjd420nova In reply to Video card dead?

Confirm the proper operation of the power supply
before you replace anything. If the fan on the
video card doesn't turn, that points to the P/S
No beeps means no power. The video card has to
unload first to the CPU before the Cpu can boot.

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by jon In reply to Video card dead?

You can test your power supply independent of the chassis. I did this a while back but I can't remember the pins on the motherboard connector that need to be jumped with a small wire. If you do a google search for power supply connectors you can probably figure out which to connect and then you'll be able to fire up the power supply without a chassis power button.

I would guess power supply before anything else. It's the least expensive of the components to replace (for the most part).

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by ngen255 In reply to

I did this, which is what led me to believe that the power supply is fine.

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by lyallaust In reply to Video card dead?

An unlikey, but obscure one I once had of these...

The video card has multple video out systems. By default these are set to clone the image at boot if detected. If there is some dirt/dust in the connector then it may be (not) detecting the output device (ie monitor, tv, AV-out, etc) and defaulting to another port/device.
In a similar manner, if your motherboard has onboard video the bootup may be defaulting through the other video card.

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