Connecting wires to motherboard

[rpgboy22]

I just built my first computer and i plugged the 4 pin floppy connector that comes out of the power supply into the system fan spot and it was for the floppy drive. but i dont have a floppy drive but the wire coming from the power supply was supposed to go to the floppy drive but for some reason i plugged it into the system fan spot and i was woundering if doing that would short out the motherboard and cpu? the computer comes on but then shuts off after like 1min and nothing comes up on the monitor.

 

[SOcRatEs]

Welcome to TS
If I got this right:
You plugging a 4 pin mini molex (used to power a floppy)into a three pin/post system fan port on the motherboard?
"some reason i plugged it into the system fan spot"
Have you seen a bright light and blue smoke yet?
Un-plug it see what happens...

G'Luck