OK, so my HTPC started acting up - running slow, programs locking up so I shut it down. When I opened the case up I found all the fins of the CPU heat sink clogged with dust. After carefully vacuuming out all the dust I hooked up the HTPC and when I pressed the power button power started cycling to the motherboard. I once again disconnected and checked all the connectons and reconnected with the same results - power would cycle. I changed out the power supply and that took care of the power cycling but now it won't boot up.
I am lucky enough that I have a second HTPC that has the exact same components with the exception of the power supply. I can hear the HD when I try and boot but nothing happens. So I was thinking that I could start with the HD and put it in the other system and see what happens then do the same with the memory. I have a bad feeling that it could be the CPU or motherboard and really would prefer to not swap the CPU because I am concerned with damaging the CPU's.
Anyone have any other suggestions, am I missing something or is this the best plan?