I saw your chat request, but wasn't able to get to you in time. I generally don't take chats, unless it's specifically in my area. You can request a refund through Fixya. That's no problem at all. They will credit your card back within a few days. If you would like, we can continue and see if we can fix your problem at no charge.

So, all you did was R&R the fan. This should be simple enough. I'm going to venture to say that either the processor isn't seated correctly, or you missed a connector. Tear it back down, pull the processor, blow it out with air, and reseat it. Also check for any connections you may have missed, and reseat the memory. At the initial start, start it without the battery, then reboot with the battery. You did remove the battery when changing the fan, right? Anyway, try this and let me know through the "ask me" tab next to my name.