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CPU Red Light on P9X79 MOBO

post #1 of 12
Thread Starter 
Desperate for help! I just built a new system (specs below) and I can't get past the CPU Led Red light! I've been through every thread I can find and while most references are for earlier versions of the ASUS Mobos I'm still not seeing any resolutions for the red light (except the CMOS, removed battery, reset which I've tried multiple times already.

MOBO - Asus p9x79
CPU - Core i7 - 3820
RAM - 4 X 2GB Hyperx
GPU - Radeon - 6870
HSU - Corsair H60
PSU - 700W Extreme Power Plus

Completed Trouble Shooting (varied order):

Reset the CMOS
Flashed the BIOS to most updated version
Removed HSU, checked and re-installed
Removed, checked all CPU connections and re-installed (no broken or bent pins)
memOK check was good
Removed and tested DIMM in multiple slots and multiple configs
Adjusted Fan Connections
Double checked all power connections
Disconnected HDD and SDD
Removed, checked and re-installed GPU
Connected to multiple monitors, HD and SD using DVI Dual Link and HDMI (no image displays)

When I power up I see the CPU Red Light on continuously. My fans and HSU are running fine and cold. I do not hear any beeps during set up, I just see the red CPU light. I cannot see the bios and have no video out to the monitor (connected to a Samsung SD that I had previously.

Is there any way to confirm that my CPU is defective prior to RMA? I don't have a compatible MOBO to test the CPU; this build started and stopped today with all new components out of the box.
post #2 of 12
Do you have a fan plugged into the cpu fan header? If so is the fan spinning?

Not trying to insult your intelligence but its a simple thing that can be easily over looked. Especially if water cooling. Just trying to give you something as you seem to have covered everything else.
Tevatron K
(15 items)
 
 
CPUMotherboardGraphicsRAM
2600K @ 4.8ghz Z77 Sabertooth R9 290 8GB Samsung 30nm @ 1866mhz 
Hard DriveHard DriveOptical DriveCooling
M500 240GB SSD 3x 3TB HDD's Sony DRU-V200S Custom water cooling 
OSMonitorKeyboardPower
Windows 7 64bit QNIX 27" 1440p @ 96Hz Ducky 1008 BeQuiet 1200w 
CaseMouseMouse Pad
HAF 932 Logitec G5 Table top 
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Tevatron K
(15 items)
 
 
CPUMotherboardGraphicsRAM
2600K @ 4.8ghz Z77 Sabertooth R9 290 8GB Samsung 30nm @ 1866mhz 
Hard DriveHard DriveOptical DriveCooling
M500 240GB SSD 3x 3TB HDD's Sony DRU-V200S Custom water cooling 
OSMonitorKeyboardPower
Windows 7 64bit QNIX 27" 1440p @ 96Hz Ducky 1008 BeQuiet 1200w 
CaseMouseMouse Pad
HAF 932 Logitec G5 Table top 
  hide details  
Reply
post #3 of 12
Thread Starter 
I'll take any ideas I can get at this point! But yes, fans are plugged in and running. The cooler fan is currently plugged into the cpu fan header and it's running; tried swapping it out for another header and plugged a regular case fan into the cpu fan header to see if it helped...no luck. Red light...
post #4 of 12
Thread Starter 
Also wondering if anyone can confirm that the BIOS Flash takes longer than 5 seconds? Seems crazy fast and I'm seeing posts that it's supposed to take up to 5 mins. I'm flashing off a small FAT USB drive and I flashed (believe I flashed I should say) the bios with version 0906 and properly renamed the file to P9X79.ROM. The flashback light blinks 5 times then stays on continuously. Tried this several times, with different BIOS versions and resetting with the Jumper in between (power down ->battery out -> jump).

Seems like it should take longer???

Thinking I got a faulty i7 CPU; anyone want to support that so I feel better about the RMA!?
post #5 of 12
I cant comment on the BIOS flash as I usually do mine through the BIOS its self. Even so I would have thought the method you are using would still need some sort of input or command to begin the process.

I have had many issues in the past, ones similar to yours and it always ends up been some error on my part or something I have missed, I am not saying this the the case but RMA should be a very last resort as it will only waste your own time if that is not the issue. Yiu seem to have covered most of the bases but hopefully someone else may chime in with something you have missed. I would give it a little time before jumping on the RMA.
Tevatron K
(15 items)
 
 
CPUMotherboardGraphicsRAM
2600K @ 4.8ghz Z77 Sabertooth R9 290 8GB Samsung 30nm @ 1866mhz 
Hard DriveHard DriveOptical DriveCooling
M500 240GB SSD 3x 3TB HDD's Sony DRU-V200S Custom water cooling 
OSMonitorKeyboardPower
Windows 7 64bit QNIX 27" 1440p @ 96Hz Ducky 1008 BeQuiet 1200w 
CaseMouseMouse Pad
HAF 932 Logitec G5 Table top 
  hide details  
Reply
Tevatron K
(15 items)
 
 
CPUMotherboardGraphicsRAM
2600K @ 4.8ghz Z77 Sabertooth R9 290 8GB Samsung 30nm @ 1866mhz 
Hard DriveHard DriveOptical DriveCooling
M500 240GB SSD 3x 3TB HDD's Sony DRU-V200S Custom water cooling 
OSMonitorKeyboardPower
Windows 7 64bit QNIX 27" 1440p @ 96Hz Ducky 1008 BeQuiet 1200w 
CaseMouseMouse Pad
HAF 932 Logitec G5 Table top 
  hide details  
Reply
post #6 of 12
Thread Starter 
*** SOLVED ***

OMF-ME..after all the triple checking and a long frustrating day of removing and reinstalling every part in the build I'm embarrassed to even admit, that I hadn't plugged in the 8 point CPU power supply (plugged in the 24 point ATX supply and then just put it behind me). hhhhhhhh...the more you learn, the less you know.
post #7 of 12
lol! I was going to suggest that but in your OP it looked like you mentioned you had already checked that. Oh well. At least you solved your problem which is the main thing.
Tevatron K
(15 items)
 
 
CPUMotherboardGraphicsRAM
2600K @ 4.8ghz Z77 Sabertooth R9 290 8GB Samsung 30nm @ 1866mhz 
Hard DriveHard DriveOptical DriveCooling
M500 240GB SSD 3x 3TB HDD's Sony DRU-V200S Custom water cooling 
OSMonitorKeyboardPower
Windows 7 64bit QNIX 27" 1440p @ 96Hz Ducky 1008 BeQuiet 1200w 
CaseMouseMouse Pad
HAF 932 Logitec G5 Table top 
  hide details  
Reply
Tevatron K
(15 items)
 
 
CPUMotherboardGraphicsRAM
2600K @ 4.8ghz Z77 Sabertooth R9 290 8GB Samsung 30nm @ 1866mhz 
Hard DriveHard DriveOptical DriveCooling
M500 240GB SSD 3x 3TB HDD's Sony DRU-V200S Custom water cooling 
OSMonitorKeyboardPower
Windows 7 64bit QNIX 27" 1440p @ 96Hz Ducky 1008 BeQuiet 1200w 
CaseMouseMouse Pad
HAF 932 Logitec G5 Table top 
  hide details  
Reply
post #8 of 12
OMG....
Thanks mmallette. I was having exactly the same issue.
I had plugged the 8 pin power cable and had to remove it to place the fans on top of the case. I just forgot to put it back. As soon as I read your post, I knew I forgot to put it back. Thanks !!!!
post #9 of 12
Dangit I am getting same symptoms, but my 8pin and 24pin (and cpu fan connector) are all properly seated! Anyone have other ideas?
post #10 of 12
I'm having the same problem with my p9x79 pro and i7-4930k. I flushed the bios via USB and it took like 7-10 seconds to complete. The CPU led is red and the fans are spinning. My 8 pin cable is connected to the board. I tried everything but it is still red..
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