Tom's Hardware > Forum > Motherboards & Memory > Asus > Motherboard won't turn on. Expert needed, please help.

Motherboard won't turn on. Expert needed, please help.

Forum Motherboards & Memory : Asus - Motherboard won't turn on. Expert needed, please help.

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blackbird307   01-20-2009 at 10:46:51 PM

I just hooked everything up, the motherboard LED goes on but when I flick power switch nothing happens no fan. Power switch is hooked up properly, not even graphics card fan will work. The power supply should work 465 watts. It isn't shorting out either, im sure of it. I put 1gb ddr2 ram stick 667 and a am2 athlon x2 5200 cpu Brisbane. It is a M2V motherboard, it isn't mine and im depressed now I need it back by tommorow. Please help :(


Message edited by blackbird307 on 01-20-2009 at 11:06:38 PM
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Bronze Motherboards badge GhislainG   01-20-2009 at 11:32:11 PM

Just to make sure, in addition to the 24-pin power connector, you didn't forget to connect the 4-pin or 8-pin CPU connector?

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blackbird307   01-25-2009 at 11:26:53 PM

Yeah, I have a 24pin powersupply + a 4pin connector and they are both hooked up. I noticed it is pretty warm by the ite
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Bronze Motherboards badge GhislainG   01-26-2009 at 12:15:13 AM

If you connected the 20+4 (24-pin) ATX connector as well as the 4-pin ATX CPU connector (the small 4-pin socket closer to the CPU) and it won't start, then connect a speaker (if you haven't already done so), remove everything but the CPU and power up again. Does it beep to indicate that memory is missing? Is the CPU installed properly, i.e., are you there are no bent or broken pins (if it's possible with that CPU)?

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Saltgrass   04-26-2009 at 05:48:09 PM

If you have a motherboard that won't do anything when the power button is hit and everything else looks normal, try replacing the CMOS battery.

I just had a ASUS board which showed the green LED for power, but did nothing when turned on (shorting the pins on the board also). The CMOS battery was showing less than .5 volts and replacing it restored the startup. I assume the battery voltage is used as a reference so when it drops below a certain level, the power cannot be verified and therefore not allowed.

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