So I have a Z840 tower workstation and yesterday for some unknown reason it just froze in the middle of some rendering job i was doing. I had to cut the power off because nothing was working, not even the task manager.
I relocated all the rams and Graphic card as a standard drill but was disappointed. Now, today I just opened the case again and removed all rams and kept only one to see if it works and all of a sudden a chip started burning. OMG my heart rate touched the sky. I knew something screwed up badly. I took a closeup shot of the burned component and linked here.