ASUS M2N-E does not start

[daten23]

Hey

I have a ASUS M2N-E Motherboard but nothing happens, when I try to start my PC. It used to work in the past. First I had sometimes trouble to turn it on but now just nothing happens.
I tested the power supply unit by connecting the black and green wire and unplugging the main board just operating two HDs and it worked fine. I also checked the voltages. When plugging in the mainboard again the SB_PWR LED is on, however the computer will not start. I unplugged all devices from the mainboard - still nothing. I wonder whether I connected the 2pin PWRSW correctly but I reversed it and still no effect. Maybe the On/off plug is broken so I tried the RESET plug - nothing. Is there a way to start the computer without using the case of my computer just in case the ON/Off plug is broken?
How can I find what is wrong with my mainboard?

Thanks for all answers!

daten23

 

[Alec Mowat]

Did you try the jumper to start the board?

The switch plugs into two pins, connecting the two pins with a screwdriver should start the board. Exactly the way you started the PSU.

 

[daten23]

Hey - thanks for the quick reply!

Are you talking about the two PWRSW Pins? I tried to connect them with a screwdriver and with a paper-clip but nothing happend or are there other pins to connetc as well? Where can I find them?

 

[Alec Mowat]

That's the two.

Sounds like a dead Motherboard.

Did you change anything recently?

Try breadboarding the motherboard; remove it from the case and build the system on a cardboard box.

 

[daten23]

Oh dear. That sounds expensive 🙁
Unluckily I did not change anything recently.

 

[Alec Mowat]

Try a breadboard setup and see if it boots. Looks for obvious signs of damage, burn marks or blown capacitors.

Motherboards are generally not very expensive. You might have trouble finding an old AM2 board that supports DDR2 though.

 

[daten23]

So if breadboarding fails, and there is no obvious sign of damage is there another way to make sure that the mainboard is dead. Do you have suggestions which mainboard will support my old components?

 

[Alec Mowat]

So if breadboarding fails, and there is no obvious sign of damage is there another way to make sure that the mainboard ist dead. Do you have suggestins which mainboard will support my old components?

Not without another board to test.

Anything socket AM2 will work. They don't manufacture them anymore. You can use your processor in an AM2+ board, but you will need to purchase DDR3 RAM. If that's the case you are better off going to AM3+ and replacing the CPU as well.

 

[daten23]

Just to be sure ... would it also be possible that the mainboard is fine bute the CPU is dead? Would the problem exactly look like the one I'm facing or would the mainboard start up with a broken CPU?

 

[Alec Mowat]

Not if it's not powering on. Usually it will power on and give a beep code that the CPU is not present.

 

[daten23]

Hey today things were are little suprising.

Nearly ready to buy a new mainboard I decided to do a last test with a power supply unit of a friend ... and it startet so the mainboard is fine.
I've checked my power supply and it will start when just HDs are connected and you connect black and green. I've checked again all the voltages and they are fine as well. This is getting really mysterious.

By the way there is no beep when starting without CPU. PSU will just turn itself off after a while.

daten23

 

[Alec Mowat]

Are you using the right pins to power it on?

 

[daten23]

Yes definetly for it used to power on with the other PSU.