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?