i need help with a cpu upgrade. I am experiencing the problem at this moment

i have a sabertooth 990fx with pheonom IIx6 i purchased a fx8350 and swaped it and i got no response from pc...just ligts. i swaped the pheonom back in and it booted up saying i have a new cpu... i swaped the 8350 back in and got nothing but lights...
im i doing somthing wrong or in the cpu dead
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  1. Best answer
    Yep looks like you have to update your BIOS as in the thread above.
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