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When I flip the switch on my psu, only my Gpu lights up.

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July 28, 2013 7:51:42 AM

I just finished my first build, though when I flip the switch, only my Gpu lights up. I can't power it on either. I might be wiring incorrectly.

Motherboard: Asrock Pro3 Z77
Cpu: i5 3570k
Cpu cooler: Stock
Psu: CorsairTX 650w
Gpu: Asus Gtx 770 Directii OC Edition
Case: NZXT Phantom Full Case - White
Ram: Corsair Vengeance 4x2
a b ) Power supply
July 28, 2013 8:17:34 AM

well ... just check if your motherboard is powered and connected from your psu , you need to connect the the atx 20 pin connector and the 4 or 8 pin extra power to your motherboard , often this connector is located at the very top of the motherboard

and check at the back of your psu if the switch (red one) is 220v selected for europe
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July 28, 2013 8:29:43 AM

badboyrog said:
well ... just check if your motherboard is powered and connected from your psu , you need to connect the the atx 20 pin connector and the 4 or 8 pin extra power to your motherboard , often this connector is located at the very top of the motherboard

and check at the back of your psu if the switch (red one) is 220v selected for europe


I don't see a red switch. Also, is the Cpu connector supposed to go in atx12v1?

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a b ) Power supply
July 28, 2013 8:48:28 AM

is the Cpu connector supposed to go in atx12v1?

you have a motherboard power connector of 20 pins and a power of 4 or 8 pins for the cpu to connect on your motherboard

and for the red button , i d ont know it can be in other kind of color too?? but you have to be in 220v mode for europe for north america its 120v...
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a b ) Power supply
July 28, 2013 8:52:46 AM

ok i just check on your psu model and they said ..... ''Universal AC input 90~264V automatically scans and detects the correct voltage''
so, no red switch

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July 28, 2013 9:13:03 AM

badboyrog said:
well ... just check if your motherboard is powered and connected from your psu , you need to connect the the atx 20 pin connector and the 4 or 8 pin extra power to your motherboard , often this connector is located at the very top of the motherboard

and check at the back of your psu if the switch (red one) is 220v selected for europe


badboyrog said:
is the Cpu connector supposed to go in atx12v1?

you have a motherboard power connector of 20 pins and a power of 4 or 8 pins for the cpu to connect on your motherboard

and for the red button , i d ont know it can be in other kind of color too?? but you have to be in 220v mode for europe for north america its 120v...


I can't figure out where the cpu connector goes. I also still can't turn it on.
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a c 1202 ) Power supply
a c 223 V Motherboard
a c 564 U Graphics card
July 28, 2013 9:41:46 AM

You need to plug in the main ATX (20+4)-pin power connector from the power supply unit into the 24-pin ATXPWR1 socket on the motherboard. Also you need to plug in the 4+4 pin EPS12V/ATX12V connector from the power supply unit into the ATX12V1 socket on the motherboard. Also make sure your computer case's front panel connectors are properly connected to the motherboard's System Panel Header.

Start your troubleshooting by removing everything except for the minimum components needed to pass POST (i.e. Power On Self Test).

You can remove your graphics card and use the integrated graphics processor that is built into the Intel Core i5-3570K. Install only one DIMM in slot DDR3_A2. If it POSTs then shutdown, remove the AC power cord and add another DIMM in slot DDR3_B2 and plug the AC power cord back in and power up. If it POSTS the next DIMM should be added to slot DDR3_A1, ..., etc.

If all of the DIMMs work then you can add the graphics card. You will need to plug in both (6+2)-pin PCI Express supplementary power connectors to the graphics card leaving the +2 portion unconnected for any 6-pin PCI-E power sockets on the graphics card. Don't forget to plug your monitor cable into a graphics port on the graphics card and not in one of the motherboard's graphics ports that was needed when using integrated graphics.
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July 28, 2013 9:56:23 AM

ko888 said:
You need to plug in the main ATX (20+4)-pin power connector from the power supply unit into the 24-pin ATXPWR1 socket on the motherboard. Also you need to plug in the 4+4 pin EPS12V/ATX12V connector from the power supply unit into the ATX12V1 socket on the motherboard. Also make sure your computer case's front panel connectors are properly connected to the motherboard's System Panel Header.

Start your troubleshooting by removing everything except for the minimum components needed to pass POST (i.e. Power On Self Test).

You can remove your graphics card and use the integrated graphics processor that is built into the Intel Core i5-3570K. Install only one DIMM in slot DDR3_A2. If it POSTs then shutdown, remove the AC power cord and add another DIMM in slot DDR3_B2 and plug the AC power cord back in and power up. If it POSTS the next DIMM should be added to slot DDR3_A1, ..., etc.

If all of the DIMMs work then you can add the graphics card. You will need to plug in both (6+2)-pin PCI Express supplementary power connectors to the graphics card leaving the +2 portion unconnected for any 6-pin PCI-E power sockets on the graphics card. Don't forget to plug your monitor cable into a graphics port on the graphics card and not in one of the motherboard's graphics ports that was needed when using integrated graphics.


Thank you. I actually do need help finding where each front panel connector goes.
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Best solution

a c 1202 ) Power supply
a c 223 V Motherboard
a c 564 U Graphics card
July 28, 2013 11:22:56 AM

NZXT Phantom ---> System Panel Header
HDD LED -----------> HDLED+ & HDLED-
RESET SW ---------> GND & RESET#
+P LED -------------> PLED+
-P LED --------------> PLED-
POWER SW --------> PWRBTN# & GND

If the LEDs don't light up it means that the polarity is reversed so you will need to rotate the LED connector from the Phantom by 180° and plug it back in to the appropriate System Panel Header pins.

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July 28, 2013 12:42:11 PM

ko888 said:
NZXT Phantom ---> System Panel Header
HDD LED -----------> HDLED+ & HDLED-
RESET SW ---------> GND & RESET#
+P LED -------------> PLED+
-P LED --------------> PLED-
POWER SW --------> PWRBTN# & GND

If the LEDs don't light up it means that the polarity is reversed so you will need to rotate the LED connector from the Phantom by 180° and plug it back in to the appropriate System Panel Header pins.



Okay. The polarity is reversed. What am I supposed to do exactly? Sorry, I'm confused.
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a c 1202 ) Power supply
a c 223 V Motherboard
a c 564 U Graphics card
July 28, 2013 12:46:54 PM

If it's the HDD LED connector just rotate the connector by 180° and plug it back in.
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July 28, 2013 12:51:30 PM

ko888 said:
If it's the HDD LED connector just rotate the connector by 180° and plug it back in.


Still not working. Thanks anyway.
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July 28, 2013 5:48:13 PM

I think I may have a dead motherboard. Nothing is working, but the power supply and the GPU.
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a b ) Power supply
July 28, 2013 5:52:42 PM

maybe try to reseating all hardwares to your motherboard , but remove power on it before of course
good luck!
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July 28, 2013 7:45:09 PM

badboyrog said:
maybe try to reseating all hardwares to your motherboard , but remove power on it before of course
good luck!


You mean resetting the CMOS? I'll give it a try again!
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a b ) Power supply
July 29, 2013 2:05:12 AM

no reinstall all the hardwares on the motherboard
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July 29, 2013 7:19:13 AM

badboyrog said:
no reinstall all the hardwares on the motherboard


How do I do that?
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