Question about ASUS P7P55D PRO Motherboard

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The Green Power LED blinks constantly when power is turned on. Using brand new Antec 750W power supply. The computer wont turn turn on, no fans, nothing. No other lights come on.

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  • 3,267 Answers

Its getting high voltage. check the actual voltage from the power supply

Posted on Jul 01, 2011

  • yspim Jul 01, 2011

    It says Switching Power Supply 100V-240V. There is no actual switch for me to set it.

  • Sudeep Chatterjee
    Sudeep Chatterjee Jul 02, 2011

    I meant it is supplying more than 12V to the motherboard

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Posted on Jan 02, 2017

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1 Answer

Power Supply Dry Run Problem


You need to have the case's power switch plugged into the jumper pin header of the motherboard. Plug in the PSU into the 120 volt mains, enable the PSU via the switch (the one you turned on in the video) and then press the power switch on the computer CASE.
That should do it!

May 29, 2013 | Computers & Internet

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Hi...ihave antec sp-450 smart power and it have 2 fans.only one is working when i pluged it ...is it a problam or the ather fan starts to work later????


If the fan that is working is the outside fan on the power supply and if your case is well ventillated there wont be a problem. If not then buy a new power supply.

Jun 17, 2012 | Antec SP450 450W SmartPower ATX 2.0 20/24...

1 Answer

Computer will not start. No fans, hard drive or monitor motion at all. But, a green light on my motherboard blinks.


Out university has hhad a failure rate on antec 450w psu of 40-50% over 4 years (total number of pc:s with this psu was approx. 300). Check your motherboard with a known-to-be-good power supply.

Feb 17, 2011 | Antec Phantom 500 500W ATX Power Supply...

1 Answer

Pc power supply,


Must be a poor quality PSU. Sometimes it can be rebranded. Try another PSU. Sometimes a PSU takes out a mobo too

Jun 07, 2010 | Dell 2400 550W Power Supply ** FREE **...

1 Answer

My d530 minitower powers off unexpectedly and red lights starts to blink on System's LED//


Hi Kindly let me know how many times the red light blinks
Condition Code Service Actions Processor thermal protection activated. Power LED blinks red twice, once a second, followed by a two second pause.
  1. Make sure the computer air vents are not blocked and that the cooling fan is running.
  2. Open the hood, press the power button, and see if the processor fan spins. If the fan is not spinning, make sure the fan cable is plugged into the cable header on the system board, and that the fan is properly installed and seated.
  3. If the fan is plugged in and seated properly, but is still not spinning, replace the processor fan.
  4. Reseat the processor heatsink and make sure the fan assembly is attached to the heatsink properly.
Processor is not installed. Power LED blinks red three times, once a second, followed by a two second pause.
NOTE: This condition indicates a missing or improperly installed processor, not a defective one.

Make sure there is a processor in the system. Reseat the processor and verify that it is installed properly. Power failure (power supply is overloaded) Power LED blinks red four times, once a second, followed by a two second pause.
  1. Check the voltage selector, located on the rear of the power supply, is set to the correct voltage (the correct setting depends on the region).
  2. Open the hood and make sure the 4-wire power supply cable is fully connected to the power connector on the system board.
  3. Check if a device is causing the problem by removing all attached devices (such as disk drives and expansion cards), then power on the system. If the system enters POST, power off and replace one device at a time, repeating the procedure until the system power failure reoccurs. Replace the device that caused the failure, then replace each of the other devices and confirm that they are functioning properly.
  4. If you cannot isolate the failure to a specific device in the previous step, replace the power supply. **
  5. Replace the system board.*
Pre-video memory error. Power LED blinks red five times, once a second, followed by a two second pause, and five simultaneous beeps are sounded
  1. Reseat the DIMMs in the memory slots on the system board, then power on the system.
  2. Replace the DIMMs one at a time to isolate the faulty module.
  3. Replace 3rd-party memory with HP memory.
  4. Replace the system board.*
Pre-video graphics error. Power LED blinks red six times, once every second, followed by a two second pause, and six simultaneous beeps are sounded. For systems with a graphic card:

  1. Reseat the graphics card and then power on the system.
  2. Replace the graphics card.
  3. Replace the system board.*


For systems with integrated (on-board) graphics, replace the system board. PCA (system board) failure. ROM detected failure prior to video. Power LED blinks red seven times, once a second, followed by a two second pause, and seven simultaneous beeps are sounded. Replace the system board. Invalid ROM based on bad checksum Power LED blinks red eight times, once a second, followed by a two second pause, and eight simultaneous beeps are sounded.
  1. Reflash the ROM using a ROMPaq diskette.
  2. Replace the system board.*
System does not power on. No beeps or blinks since the system is not functioning. Press and hold the power button for less than four seconds. Perform the following steps depending on whether the hard drive LED turns green.

If the hard drive LED turns green, then:

  1. Make sure the voltage selector (which is located on the back of the power supply) is set to the correct voltage for your region.
  2. Remove the expansion cards one at a time until the 3.3V auxiliary light on the system board turns on. If removing a card turns the light on, replace the card and then see if the system works.
  3. Replace the system board.*


If the hard drive LED does not turn green, then:

  1. Make sure the computer is plugged into a functioning AC power outlet.
  2. Open the hood and make sure the power button is securely fastened in the power harness and that the harness is connected properly to the power connector on the system board. In other words, make sure that the power button is making contact with the power circuit.
  3. Make sure the power supply cables are connected properly to the power connectors on the system board.
  4. Check to see if the 3.3V auxiliary light on the system board is not turned on, replace the power supply. **
  5. Replace the system board.*

Dec 29, 2009 | HP Compaq d530 Convertible Minitower PC...

1 Answer

PC will not turn on blinking green light on power supply


Hi,
The green light on power is blinking, it means power supply working in main power and the main supply not constant that time after constant the green light, then turn on the PC.

Thanks




Aug 13, 2009 | Intel SR1350-E Server Chassis...

2 Answers

Computer will not turn on


  • Blinking Amber/yellow: Initial state of LED at power up.
    Indicates system has power, but the POWER_GOOD signal is not yet active.
    If the hard drive LED is off, it is probable that the power supply needs to be replaced.
    If the hard drive LED is on, it is probable that an onboard regulator or VRM has failed.

Apr 28, 2009 | Dell Dimension 4600 PC Desktop

1 Answer

Computer won't start


The power supply is fried partially, or the motherboard went poof.

Dec 19, 2008 | Antec TruePower 2.0 550W 24/20pin nVidia...

1 Answer

Power LED blinks red


it is a bad fan. it also could be a power supply. Quite often the real problem is dirt clogging up the fan(s) to the point that they need to be replaced. Operation of the set in a dirty environment is not a good idea

Feb 26, 2008 | Sony KDS-60A2000 60" HDTV

1 Answer

New Computer Wont Boot!


when you say "the fan makes a noise like its getting ready to spin", which fan...power supply's or cpu? if you answer power supply, then the POWER OK signal is not returning to power supply and it then quickly shuts down to prevent further damage. double check a firm connection to mother board. If you answer CPU, then it becomes far more complicated. Try re-seating the memory chips.

Jun 05, 2007 | Systemax Venture PC Desktop

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