Please HELP, system won't post (M5A99FX Pro R2.0 and FX-8350)

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drgreenthumb2025

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May 30, 2015
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Put together a new system, but when I started it up it failed to post. The system has power and all the case fans and graphics card fans spin up when the system is powered on, but the Memory LED, the CPU LED and the boot device LED all flash red and then the fans turn off.

Here's a video of me starting the system up, in case I didn't describe it well enough
https://www.youtube.com/watch?v=1SeEuuDmaRM

I don't have a CPU cooler on the chip (I wanted to make sure the system posted before putting any kind of thermal compound on the CPU in case I had to remove it for whatever reason), but I tried to boot the system with the stock CPU cooler plugged in to it's fan header (cooler fan spins up, but then shuts down like the rest of the fans) and it still didn't post. I don't know if that will make a difference or not.

I've also gone back and checked to make sure I plugged everything in tightly.

AMD FX-8350
ASUS M5A99FX Pro R2.0
G Skill DDR3 1866 F3-14900CL8D-8GBXM
XFX Double D R9-280A-TDFD
XFX XTR Series P1-650B-BEFX
Kingston Hyper X Savage 240 GB SSD
Fractal Design R5

Any help you guys can offer would be greatly appreciated.
 
Solution
clutchc
Probably a defective board. Bread board the system outside the case with just CPU/cooler, memory, PSU, monitor, KB attached. See if you can get it to boot to a display when you momentarily short the two pins that the case's power button would connect to. If not, it is a pretty good chance the board is DOA. Had my share.

You may want to leave the KB disconnected to be sure it isn't killing the boot.
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clutchc

clutchc

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Probably a defective board. Bread board the system outside the case with just CPU/cooler, memory, PSU, monitor, KB attached. See if you can get it to boot to a display when you momentarily short the two pins that the case's power button would connect to. If not, it is a pretty good chance the board is DOA. Had my share.

You may want to leave the KB disconnected to be sure it isn't killing the boot.
 
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Solution
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drgreenthumb2025

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May 30, 2015
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Sorry, what's KB shorthand for?
 
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clutchc

clutchc

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Wait. The cooler not being on the CPU correctly, or not being installed at all? Obviously it won't start when it doesn't see a cooler fan plugged into the cpu fan header. That is so it doesn't fry itself.
 
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