MSI DKA790GX

Hi,

I bought MSI DKA790GX mobo, Thermaltake M9 case, Thermaltake 470W PSU, AMD Phenom X3 8650 CPU, 2x2gb Corsair 1066Mhz XMS2 RAM and so on. I installed motherboard, others components as well, connected 24 pin power connector, 4 pin CPU power connector as well. Althougth there are no "+" or "-" minus signs on the front panel cables, I assume that the colored are "+" ones, and connected them as well (leds-to-leds, sw-to-sw).

But when I push the power button, my mobi powers up for a sec and goef off instanly.

Please, can anyone help me with this issue? Thanks in advance.

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has anyone ever encountered that problem?

Reply to X-313

Everyone has had this issue.

Your power supply is tripping, but it could also be your motherboard or other components causing it to trip.

You don't mention a Graphics card and 470W is plenty if you are using onboard graphics. If you have a graphics card unplug it and use onboard graphics.

LEDs have polarity. disconnect them from the motherboard.

The power switch does not have polarity. double check to make sure you are connecting the right leads to the right pins, although if you get even a momentary response from the power supply, you probably have it hooked up right.

Try removing the memory. Try one stick and try it in different slots.

Do you have a another power supply that you can try? Do you have another system that you can try your new power supply in.

Power problems are difficult to diagnose if you can't swap parts around.

Message quoted 1 times

Reply to Prescott_666

Prescott_666 wrote :

Everyone has had this issue.

Your power supply is tripping, but it could also be your motherboard or other components causing it to trip.

You don't mention a Graphics card and 470W is plenty if you are using onboard graphics. If you have a graphics card unplug it and use onboard graphics.

LEDs have polarity. disconnect them from the motherboard.

The power switch does not have polarity. double check to make sure you are connecting the right leads to the right pins, although if you get even a momentary response from the power supply, you probably have it hooked up right.

Try removing the memory. Try one stick and try it in different slots.

Do you have a another power supply that you can try? Do you have another system that you can try your new power supply in.

Power problems are difficult to diagnose if you can't swap parts around.

Thanks for you response.
I do have separate Graphics Card - Sapphire RADEON HD 4650 512MB GDDR3. I will deatached that and try again, even though I think that 470W enough for the system.

Reply to X-313

I removed some unnecessary mounting posts and my comp now powers up - cpu fan, case fans working, but that's all I got. nothing else. no output through vga (nothing on monitor) and no beeps. I try to turn off system pushing power button, but no effect, reset button as well... Does that mean my mobo corrupted?

Reply to X-313

If removing mounting posts caused the PSU to stop tripping, then they must have been shorting something out.

Something may have been damaged by the short.

Do you have a multimeter? Can you check the voltages on each of the PSU rails?

If all the rails have the correct voltages, it's probably not the PSU. You can't be completely sure unless the Multimeter can measure each voltage accurately enough so that you can tell if it is in spec.

If the PSU is okay, it could still be something plugged into the motherboard, such as memory, the processor, or even the monitor cable shorted, but it's probably the motherboard.

Message quoted 1 times

Reply to Prescott_666

Prescott_666 wrote :

If removing mounting posts caused the PSU to stop tripping, then they must have been shorting something out.

Something may have been damaged by the short.

Do you have a multimeter? Can you check the voltages on each of the PSU rails?

If all the rails have the correct voltages, it's probably not the PSU. You can't be completely sure unless the Multimeter can measure each voltage accurately enough so that you can tell if it is in spec.

If the PSU is okay, it could still be something plugged into the motherboard, such as memory, the processor, or even the monitor cable shorted, but it's probably the motherboard.

I took RAMs out of mobo, but it did not beep... I there was a possibility that I pluged once AC'97 audio cable instead of HD one to connector... Could that damage my mobo?

Reply to X-313

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