Asus Crosshair IV Formula Q_CPU LED Bright red and won't POST

jnapo87

Honorable
Mar 10, 2013
5
0
10,510
Current specs:
Antec DF-85 Full ATX
BFG Tech 800 Watt PSU
Asus Crosshair IV Formula 890FX ROG edition
Phenom II 1090 T ( CoolIt Liquid CPU cooler)
8 GB DDR3 1600 A-DATA Gaming
32 GB A-DATA SSD
150 GB WD Raptor 10k HDD
Gigabyte Radeon HD 5870 1GB GDDR5 ( 3 x 22" LCD WS @ 5040 x 1050)

I bought myself a new SSD cause my 32Gb crapped out on me over a month ago and all im using is my 150gb for everything, but I also got a new graphics card. Yesterday they came in the mail about 3 hours before scheduled meeting. I figured it would be a quick upgrade for me. After installing the goods, my PC would not POST. The Q-LED CPU was Red letting me know my CPU wasn't POSTING and I didn't even touch my CPU.
I've tried literally everything yesterday up until I had to goto work. Put the old video card in and got the red light. CMOS the board and got the red light. Took off my Cooler, reseat my CPU with fresh thermal and reseat the cooler on top and still got a red light. Took out the CPU cooler and installed the Stock Heatsink and Fan and Still it will not post. My Diagnosis at this point is its either my motherboard thats faulty, my CPU or Both.

Now Ive had this build since 2010 without any issues and It would not POST after installing my GTX 760 OC 4 GB. Ive also been told that I might be my PSU as well considering ive had it since 2008. Its 800 Watts and more then sufficient and if my board lights up with all my fans spinning, how would I know if my PSU is the culprit? Cause I bought all new parts to do a rebuild. But if my PSU turns out to be the culprit, what are the odds it would damage my new parts upon first boot.

My memory is 8 GB, 4 x 2 GB DDR3 1600 Modules, I boot my PC with just 1 of the 4 sticks individually and no post, same red cpu light. Tried to boot my pc with no mem or GPU or no GPU with Memory and no difference, I can't see all 4 of my dimms going bad.

If my PSU is no good, then how come its powering everything, and by everything I mean all 7 case fans, CPU cooler indicating lights and the fans on the GPU when installed.
 
Solution
I understand you have a CPU liquid cooler. Try installing the stock fan and start the board. See if the CPU fan is spinning. This way you'll know if the CPU gets power.

dreamerz

Honorable
Aug 24, 2013
136
0
10,710
Do you have any of the oC features turned on? What error codes are you seeing? If you have a case speaker installed to the front panel do you hear any error codes? Could the liquid cooler have sprung a leak without you knowing? Anyway of testing the cpu on another board or getting another cpu in your board?
 

jnapo87

Honorable
Mar 10, 2013
5
0
10,510
Case speaker is in, but no sounds, no beeping at all. Just a Red CPU LIGHT. No CPU cooler leak that I know of. Nothing to test my stuff on. I got all replacement parts. Im more worried about powering up my machine with all my new parts and find that my PSU is also the culprit and what are the odds of first bootup with old PSU to damage all new parts?