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P9X79 won't boot - strange behavior

post #1 of 7
Thread Starter 
Mobo: P9X79
CPU: i7 4820k
RAM: 2 sticks of Corsair Vengeance 8GB DDR3
PSU: Corsair HX750

When I turn it on, the CPU LED comes on an stays on, for about 2 seconds before the entire machine shuts off. A few seconds later, it comes back on again and stays that way indefinitely, with the red CPU LED. Nothing on the screen, can't get to BIOS.

Things I've checked:
- Someone else with the same issue wasn't plugging in their motherboard fully. I am.
- Reset CMOS.
- Check the bed for the CPU on the motherboard: everything looks fine (no bent pins) though the pattern on the bed doesn't exactly match the pattern on the CPU. However the 4820 is listed as compatible with this CPU so I feel like that isn't an issue. It fits in the bed well, though just a tiny bit loosely (enough to make me nervous).

I've tried taking it apart and putting it back together, with no luck. What am I doing wrong?

This guy seems to have had the same problem: http://www.tomshardware.com/forum/327774-30-cpu_led-light-instant-reboot-p9x79
Edited by zfrenchee - 10/17/13 at 8:59pm
post #2 of 7
Is the board updated for the new CPU'S, you can flash with nothing in it. Is your memory on the mother board supported list, do you have other sticks to try?

http://www.asus.com/Motherboards/P9X79_WS/

http://rog.asus.com/technology/republic-of-gamers-motherboard-innovations/usb-bios-flashback/
Edited by PhIlLy ChEeSe - 10/18/13 at 9:25am
post #3 of 7
Thread Starter 
My RAM is http://www.newegg.com/Product/Product.aspx?Item=N82E16820233281 I don't have other sticks to try. I assume if they were failing that wouldn't cause the CPU LED to light up.

I don't know if the board is updated. How would I check?
post #4 of 7
Use the beta chipset driver on Asus download page.
I had so many problems with a new 4930K that I reinstalled my 3930K.

Edit: Sorry should have read the entire post. Drivers won't help if it won't even boot.
Sounds like you should check for bent pins.
Edited by ski-bum - 10/18/13 at 10:01am
Blue & Gold X79
(21 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-4930K  Asus X79-DELUXE  EVGA GTX 980 ti SC ACX 2.0 G.SKILL RipjawZ Series 16GB (4 x 4GB) 1866 
Hard DriveHard DriveHard DriveHard Drive
OCZ Vertex4 128GB (OS) WD RE4 2x500GB RAID0 WD Caviar Black 2TB OCZ Vector 180 
Hard DriveHard DriveHard DriveOptical Drive
OCZ Vector180 480GB 480GB OCZ Vector 180 series OCZ Vector 180 480GB Lite-on DVD Burner 
Optical DriveCoolingOSMonitor
LG Blue Ray Burner Cooler Master TPC 812  Microsoft Windows 10 x64 Asus PB278Q 
KeyboardPowerCaseMouse
Logitech G19 Corsair HX1000 HAF932 Blue (custom paint) Logitech G500 
Mouse Pad
Staples 
  hide details  
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Blue & Gold X79
(21 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-4930K  Asus X79-DELUXE  EVGA GTX 980 ti SC ACX 2.0 G.SKILL RipjawZ Series 16GB (4 x 4GB) 1866 
Hard DriveHard DriveHard DriveHard Drive
OCZ Vertex4 128GB (OS) WD RE4 2x500GB RAID0 WD Caviar Black 2TB OCZ Vector 180 
Hard DriveHard DriveHard DriveOptical Drive
OCZ Vector180 480GB 480GB OCZ Vector 180 series OCZ Vector 180 480GB Lite-on DVD Burner 
Optical DriveCoolingOSMonitor
LG Blue Ray Burner Cooler Master TPC 812  Microsoft Windows 10 x64 Asus PB278Q 
KeyboardPowerCaseMouse
Logitech G19 Corsair HX1000 HAF932 Blue (custom paint) Logitech G500 
Mouse Pad
Staples 
  hide details  
Reply
post #5 of 7
Quote:
Originally Posted by zfrenchee View Post

My RAM is http://www.newegg.com/Product/Product.aspx?Item=N82E16820233281 I don't have other sticks to try. I assume if they were failing that wouldn't cause the CPU LED to light up.

I don't know if the board is updated. How would I check?


If its brand new should have a bios sticker on it some where, Read the links you can flash the board with nothing installed. Worse case it still does not work huh?
post #6 of 7
Thread Starter 
BIOS flashback fixed it. I've never had a Motherboard that doesn't work on arrival before. Thanks guys!
post #7 of 7
Glade your up n running!
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