My friend just purchased a Thunderbird 800,(socket A) unfortunetly neither he or myself are able to get it to install windows without locking up..(it is not overclocked) All we have in the motherboard is a V3 2000 PCI. I have the memory latency settings turned to slowest and we still get a lockup during install. I was at my wits end until I felt the heatsink and it was cool to the touch, I asked him if he used thermal grease and he said no, it was supposed to come with the paste but instead came with a white and yellow strip of heat transfer tape affixed to the bottom of the large aluminum heatsink. It appears to me that it does not transfer heat very well, i have seen T-birds in action before and they are toasty, his heatsink as i stated before, is a bit on the cold side. Is anyone out there running their T-bird with thermal tape and does it work? I am assuming this is the problem, but if not it has gotta be a bad cpu or motherboard. He ordered some arctic silver but i doubt it will be in for about a week, any suggestions or comments before then?