My dell precision t7610 gives no picture what do ever. The fans start spinning the leds start flashing and after some while then numbers 1,2 and 3 burn. Pulled the second processor and memory but I still do not get any picture and or bios screen.
Same situation on T5610 (dual CPU, 2x E5-2650 v2)... turned out to be a bad CPU. Tested both processors using socket for CPU1. One of the processors (originally in CPU2 slot) would not boot, but other processor worked fine.
I SUSPECT Intel's Management Engine module update -fried- my CPU2 slot.
Dell, you owe me a new motherboard and a CPU. Bill it to INTEL.