I recently changed CPUs for i5-2500 LGA 1155 to an i7-3770 LGA 1155... this morning, in fact. Now, I get nothing. The lights and fan turn on but there is no CMOS/BIOS beep. I removed the CPU to make sure I did not bend any pins and all looked fine. I made sure the RAM cards were seated correctly, but again, nothing happened. Before I reinstate the old i5, I decided to ask for your help. Any other things I can try?