Ok here goes, i'm building a computer with a Athlon 1600XP+ on a Gigabyte 7VTXE mobo, I bought a heatsink and fan from a local computer store. The make of this was NENG which they assured me would be suitable for Processors up to 2GHz. Once all the bits had been put together I booted the computer up and had a quick look in the BIOS. It was recording temperatures of 70 degrees C +, I immediaitely thought that this was way too hot and shut the computer down. As far as I could see the heatsink had been seated correctly and the fan was working, just to make sure I removed the heatsink so I could seat it again. Now this is probably where my mistake comes in, on the bottom of the heatsink I noticed some green tape stuff so I scratched this off and put the heatsink back onto the CPU. I booted the computer had another look at the BIOS, this time it read 102 degrees C, within a couple of seconds of realising this the CPU blew. Was this my fault???? Surely the temp should have been around about 40 in the first place???