So this weekend i built a new case for my computer, and took all the components out of the old one. Now that i assembled them all into the new case, the computer wont turn on. Im pretty sure nothing happened to the mobo once i took it out, other than me taking off the heat sink to unscrew it out of the case, and i took the cpu off the bottom of it, but placed them back into place after. Maybe i didn't plug something in i was supposed to. But i see that the mobo is getting power (little light on it turns on) so shouldn't the fan at least spin for a few secs when i click power?