I'm a newbie and building only my second computer. I bought an Athlon processor and it came with a fan. I installed both, started computer, nothing happened. I reseated RAM and still nothing, so I removed the CPU fan, reseated the processor and the fan to see if that might be the problem. Yes, the BIOS did come up then. But now I'm wondering, in pulling up the CPU fan and reseating it, did I mess up the thermal paste seal. Do I need to do something about that or should it be fine?