Perhaps you had a power surge... The PSU might be damaged. When you switch it on, what does happen? Fans, etc. You say it doesnt post, but we need to know what DOES work
The PSU seems to be fine, all the fans are running (CPU cooler, Graphic card fans) and- the LED lights are working. I am not sure if my CPU, RAM, or Graphics card is working. I believe the harddrive is spinning. Could it be my CPU or Graphic's card?