|It sounds to me like your motherboard BIOS needs to be updated in order to properly configure the CPU you have installed. |
To answer the question by wizard-fred, it is possible for a board to POST with a newer CPU of the same series the board was designed to run. However the proper settings may not be encoded in the BIOS so the CPU can't be setup to run at design speeds.
I suggest you do two things. First, watch the PSOT screens at startup to get the BIOS version. That should be displayed. Scroll Lock or Pause keys should stop the screen long enough to read. Tapping any key will resume.
Second, go to the motherboard website and see what the BIOS version you have supports. If a BIOS update is required the procedure varies with the manufacturer and model.
If I am correct you may be able to proceed with the install. That would depend on how the BIOS must be updated. Some can only be done from within the OS (Windows). In which case you would need to install.
I could be wrong about what the error message means too. However, that is one common reason.
One other item to note. In addition to the model number of your motherboard there should also be a revision number after the model. That should also be displayed and marked on the edge of the board too.
Did you purchase recommended speed memory modules?