MSI 990FXA-GD80 won't post and no debug light

[moon_monkey]

Hi guys,

Earlier today, my PC died on me - no signal to the monitor, all fans still running, HDD quiet.
On reboot, it won't POST at all.
- fans start up
- cpu and northbridge phase leds come one
- hdd led on mobo comes on for a fraction of a second
- hdd spins a bit, then stops
Nothing new happens beyond this point. No beeps, no signal to the monitor and no debug code on the mobo display (in fact it doesn't light up at all). Everything seems to be getting power - reset and power switches on the mobo are lit up, but unresponsive.

I've tried different RAM, just using one stick, disconnecting both HDD individually and both at the same time, disconnecting everything but the gfx, cpu and 1 stick of ram. All yield the same result.

Edit - also tried it with a fresh HDD. Same result

Any ideas on other stuff I can try?

Motherboard, gfx, ram, cpu and psu all about 3 months old and have been running with no problems until today.

Is my mobo dead, after 3 months of use (not overclocked)?

All help appreciated.

Cheers,
mm

 

[Hagar]

Reset the cmos, refer to your user manual. May be a jumper on the motherboard, or remove cmos battery and unplug for 15 mins.

Test the psu. Connect the green and black wires in the 24 pin plug and check the voltages on the 12v line. What PSU is it?

 

[moon_monkey]

Thanks for the suggestions.

My spec is this
Board: MSI 990FXA-GD80
Bios: Version 13.1
VGA: Asus DirectCU II TOP Radeon HD 7970
PSU: Seasonic X-Series 650W (54A 12V rail)
CPU: AMD FX 8320 Black Edition 8 Core Processor Socket AM3+
MEM: 16GB Mushkin DDR3 PC3-12800 Redline Ridgeback (8-8-8-24) Dual Channel kit (2x8GB)
Boot HDD: Corsair P128 128GB 2.5" SATA-II SSD
Storage HDD: 1TB Samsung HD103UJ Spinpoint F1
COOLER: Noctua NH-C12P
OC: None
OS: Windows 7 64bit Home

My voltmeter is knackered, so I can't test the PSU voltage atm.

Tried:
- resetting the CMOS (it's jumpers on this board)
- my old PSU (Silencer 750)
- my old CPU (Phenom X4 955)

All 3 give the same result - no POST, no debug message, power to everything as far as I can tell, HDD spins for a bit then stops.

Edit - just tried an old gfx card (7800GT). Same.

Cheers,
mm

 

[Hagar]

I have the same PSU, ultra reliable and bulletproof, well nearly. Should not be an issue there.

I can only suggest that you try different SATA ports and PCIe slots, but I am tending towards your conclusion that the board has died. You could give it a last try outside of the case

Sounds like an RMA.