Question about ASUS A7V8X-X (90-M7A690-W0EAY) Motherboard

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Installed new mother board, bad things happened.

Hello, I just installed a replacement motherboard and now I am having technical problems out the @*%. First, I made sure I was grounded, and then I screwed the motherboard into the case. I then hooked up all of the drives, cards and wires. So I thought that I was all set. So I plug in the power cable, monitor, keyboard and mouse. I turn on the computor and get to the bios setting page, and then it turns off. Everytime after this, the same thing happens. I take out the cmos battery, and then nothing happens, After that I move the jumper to it around, after going to a couple of forums, and it gets the fans spinning. But that was it besides the disk drives. I made sure that I was grounded while having an open case. Is there anything that I can troubleshoot to maybe get everything working again.

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Hi Willy,
Sounds like you have a faulty memory stick.
You did not say if you used your old stick or replaced it with a new stick!
If you are using your old stick or sticks, MAKE SURE they are compatible with your new mainboard.
At one time, you could use a slower speed memory stick and the board would operate but with the memory bus at the slower speed of the memory stick, HOWEVER, this is not true nowadays!
You cannot mix old and new sticks, nor can you use the incorrect stick. Even if the stick fits into the same slot it may still not be compatible.
It sounds like you board is not finishing the POST ( Power On Self Test) and this is usually caused by the ram stick or sticks or the CPU
Check them both with the boards specs.
Try leaving the memory sticks OUT and boot the board without them. If the board starts beeping, this is a sign of faulty sticks or incompatible sticks.
The length and number of beeps will tell you what the problem is ( but we already know that no ram is installed)
If this does not work, remove all the cards from all slots etc and try booting a clean board, if it boots, re-install each card one at a time until the card or ram stick which is causing the problem stops the board from booting.
Also, make sure your power supply has the correct power connectors for the board and make sure the ATX12volt connector is plugged into the board.
Some boards use a 20 pin power connector and a ATX12volt connector, newer boards use a 24 pin connector PLUS the ATX12volt connector.
If you are still stuck, I would suggest you take the case to a reputable repair shop. Poking around a live board can cause more faults then you can fix.
Make sure you have disconnected the mains from the supply BEFORE you remove or install any cards or board components. REMEMBER - modern boards all have a 5 volt supply rail connected to them as long as the power supply is connected to the mains!!!!

Have Fun

Swoop....

Posted on Oct 28, 2008

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Hi,
Assuming that you triple checked to make sure you made all the connections right ( and that the motherboard diagram is not actually printed upside down giving you a backward christmas tree line up for the pronged connections (which happens)... and that you did apply the heat sink insulater goop nice and perfect...and that all your stuff is compatible with each other..
there are two possibilities.
Either you got a bad motherboard or you got a bad power supply.

Good quality power supplies are equally as important as the mobo.
Swap out the power supply. If the problem repeats, its definately the motherboard.

Thankyou and good luck. Please remember to rate my answer *s*



Posted on Oct 28, 2008

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