Hi, my computer has slowed down a great deal since I got it, and I am pretty sure it is the fan. I have the program "Speedfan" and it is reading the temp of my local temp goes as high as 45 or so, but the remote temp shoots up into the 50's doing just simple tasks with only one program running. The problem is my computer has quite a few fans, so I have no idea of how to figure out which fan it is I need to replace. I have a Compaq Evo W4000. Just let me know what specs you need and I can let you know, as I am unsure of what you would need. I don't want to have to go replacing all the fans just because I don't know which needs replaced. Thanks alot in advance for any help, I appreciate it.