Posted 10 June 2016 - 09:06 PM
Normally if there is an error condition flagged, there will be the option to continue into the BIOS setup and adjust things, or continue to boot. That was my inquiry, if you could continue to enter the BIOS setup, or try to find boot devices.
Did the original CPU fail, can it be re-fitted?
If the problem arose immediately the CPU was changed, it points solidly to that as the likely cause. Possibilities include a fitting problem (e.g. bent pin), model the BIOS can't recognize, or thermal rating beyond the board regulators. Assuming the CPU is something like a socket 478.
Top 5 things that never get done: