I am building a computer and have everything in brand new power supply and when I go to turn it on nothing happens. The fan doesn't even run on the power supply. Jumper configurations are all correct. Any advice?
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Re: AB9 Pro motherboard
Do this test this will tell you if your power supply is good or bad we will do the process of elimination ok. How do I test if the power supply is bad? Warning This test is for those with extensive electronics training. Do not try this if you do not have extensive electronics training. Make sure there is enough load connected to the power supply before testing ( at least motherboard and one hard drive)!
ATX power connector layout isshown above. 5VSB constantly provides 5V power to the connector through pin 9. If you have a voltmeter, while the power supply fan does not turn on, you could identify which pin is pin 9. Normally there is a clip on the connector between pin 15 and 16. If one can identify pin 14 (the only green wire goes to pin 14), this is the power-on pin. Onee can use a piece of wire to short pin 14 and 15 (or any other black wired ground pin). If you power supply has power connected to it and power switch on the power supply is on, the fan should be turning by now. Otherwise, your power supply may have problem.
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1. Could be as simple as not having the Power Switch on the right jumper...double check.
2. The board will power up with nothing hooked to it... just power, CPU, MEM... disconect everything to just to get the board up to the bios.
3. Make sure PS is securly connected to the MB.
4. Check Jumper on the Board to make sure the Test Jumpers are not set
5. Memory is seated correctly... if you pull them out the board will start and beep...
1. Make sure you have all of the power connectors connected. There may be an additional 4-pin P4 connector and another on your video card.
2. Make sure CPU, RAM and cards are all well seated.
3. Frequently failing power supplies deliver less power before they die completely. It may just have enough power to spin the fan. Try another power supply. They are cheaper than a new MB and you can return it if it doesn't fix the problem.
1. Processor is cold dead.
2. Power Supply has got a problem. Just powering a fan is not a guarantee that it is powering everything normaly. Try a different one as you test agai.
3. I suspect your MoBo is good, but try a different video card also with your new DDR.
4. Do you hear the HDD cranking or whining when you turn on the PC? Keep ear near HDD and listen. It it whine-starts, it's a fair sign.
5. Try a different monitor while you test these.
normaly ther are two reasons for pc not showing the disply
1 memory card mismach
2 graphics card mismach
get the specification of the mother board and correct the above errors the pc will work if u need more assistace please write to me
The ATX power supply needs to have pin16(PS_On#) to be connected to COM for it to work.
When you press the power switch on the front panel of the computer, you are essentially making this connection.
Check that the cable from the power supply to the motherboard is making good connection.
You can verify operation of the power supply by shorting Pin16 to pin17 on the powersupply output, with a paper clip. Pin16 is usually a green wire and 17 is black.
Hope this helps.