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Mobo issue I cannot figure out...


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#1
stettybet0

stettybet0

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I've been trying all day today to figure out a problem I've been having, but I can't quite figure it out.

Here's the situation:

I was running Vista 32-bit with 4GB of RAM installed (2GB first, then added 2GB later). Today I decided to install 64-bit Vista to utilize it all. So, the installation goes smoothly for the first part, but upon reboot I get a BSOD. A bit of research shows that Vista sometimes (or always?) BSODs if you try to install with more than 3GB of RAM installed. So, I removed 2GB of RAM and Vista installed fine. Once it was done installing, I put back in the other 2GB of RAM. On boot-up, I get one long beep from my motherboard (normal is one short beep) and no video display. However, as I have the 680i, the LED post code shows that everything is working fine. It sounds like it is booting up (lots of HD activity), but I have no display. So, I remove the 2GB of RAM again, but I still get the long beep and no video display. I remove one more stick, so now I only have 1 stick in the mobo. Then sometimes it will boot fine, other times I still have the problem. I double checked all connections, but I really don't think that's the issue as sometimes it boots fine with 1 stick of RAM, sometimes not. I've tried upping the voltage of the RAM, but that doesn't help. What is going on here?
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#2
stettybet0

stettybet0

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Wouldn't luck have it that as soon as I posted this, I managed to fix it. (Knock on wood.)

I'm still not sure what caused it, because it was working like this before, but I fixed it by unplugging a fan molex connector from a molex that led into my mobo. What I mean is, before it was M>FM>MB (molex>fan molex>mobo), now it is simply M>MB (molex>mobo). I guess the fan was stealing a bit of voltage the mobo needed? Strange, since it had always worked before. Perhaps the molex just wasn't properly connected to the mobo, and in the process I fixed it.
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