Gigabyte GA-990FXA-UD5 motherboard for AM3+ FX-8120 CPU.

On powerup, no POST screens, no display at all.

Was told the mobo needed a BIOS flash to support the CPU, so installed an old AMD Sempron chip (to get to POST screen) and performed the flash - Rev F11, which I got from Gigabyte site.

Reinstalled the FX-8120, but on pwerup, still no POST, no display.

(As an aside, the Sempron let's me boot and run Win7 64bit - but, clearly, this is not the desired result!)

So, is this an indication I have a bad CPU?  If so, I purchased this stuff on 9/26/12 - is there warranty for the FX-8120 so I can get it replaced?  Or is there some other testing/troubleshooting I need to do?

Thanks.

 

Hi if you bought the boxed version of the cpu you get 3 years warranty. If you bought the oem version ie no box you get 30 days.

Were you running it on another board for the past 4 months?

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Crosshair IV Formula, Phenom II x4 965 w/ Corsair H60, 8 GiB OCZ Platinum DDR3 1600, XFX HD 7970 Ghz, 512GB Vertex 4, 256GB Vector, 240GB Agility 3, Creative X-Fi Titanium w/ Creative Gigaworks S750, SeaSonic X750, HP ZR2440w, Win 7 Ultimate x64

I sure wish I'd been running it for the past 4 months...  this build has been a prime example of murphy's law - technically and via hardware vendor support chains...  The CPU has basically been sitting in it's box.