Upgraded cpu black screen

Mobo: Gigabyte GA-M57SLI-S4 REV 2.0
Gfx: nvidia GeForce pny gt 545
PS: 550w

Swapped a Athlon 64 X2 for a AMD Phenom2 x6 1045t
did the swap got a black screen no beeps. I've flashed and updated the BIOS several times with different versions from the gigabyte website. Been on this for 8 hours finally goin to the forums.
I've got the 12v connector plugged in also. the CPU is listed on the supported CPU list. Any help is welcomed.
4 answers Last reply
More about upgraded black screen
  1. Is the Phenom a new CPU or an used one? Have you checked it for bent pins?
  2. It is new and I have checked the pins they are not bent or loose
  3. Then try reinstalling it with the board outside the case.
  4. You do know you have to flush the Bios after a firmware bios update dont you.
    Short out the bios after the flash.
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