I have an HP Pavilion a1110n with a P4GV-LA motherboard that kept shutting down by itself. So, I removed the CPU fan and heatsink to clean it and the CPU (Celeron D 3.06 MHz) came out with it. When I re-inserted the CPU one of the pins got bent and eventually fell off. So, I got a new CPU exactly like the old one with same printing on top. It is now installed, but when I boot the machine, the fans and hard drive spin, but I get no beeps. The hard drive light stays on for a short time. Then I get a “no signal” message on the monitor. The only thing that has changed is the CPU chip. Does anyone know how I can get this thing to boot?