Im building a system with a Athlon XP 1900+ and a Soyo Dragon Plus motherboard. I also installed the SK6 heatsink and fan and I used the thermal tape that came with it. After I put the system together, I tried booting it up and only the fans came on and nothing else happened. I disconnect everything so it was just the mobo, cpu and ram, still did the same thing. I even tried taking the mobo out of the case and onto the tabletop. After playing around with it for a while, it started to turn off as soon as I turned it on. I took the heatsink off and the edge of the thermal paste was on the edge of the cpu core. The core did seem to be burnt a little bit. There even appears to be a tiny chip in the outside of the core. Time to buy a new cpu?