When I boot, the cpu fan turns on but there is no video at all. I don't get any beep codes either. I have put in PCI-e video card thinking the on-board video is bad. Same problem - no video, no beep code. I have swapped the mem. stick but the problem persists.
The above testing done with only the bare minimum installed i.e. SMPS, CPU, Memory installed on the board.
I have checked Intel web site for cpu compatibility and my cpu is listed there.
I have come across DoA boards in wherein the board is simply dead - nothing comes works when powered ON.
What could be the problem; the cpu or the board?
from your description, - memory is not a problem - video card appears to be working as well - your cpu/motherboard are compatible
imho in this case, its the motherboard that you should be looking at. I have seen this happening with one of my desktop machines. It took us a while to get to the real cause as there were no beeps, things appear to start normally, except for the display. We changed display cards, memories cpu's and at the end came to the conclusion that part of the motherboard circuit has gone kaput.
Also I suggest you do a small test to eliminate that CPU is not the problem - start the machine, power it down after a few mins, remove the cpu fan and touch the cpu just for a fraction of second. If you feel the heat, CPU is working. Be careful while doing it as cpu's tend to get real hot really quick.
Thanks Gourav