I think I just fucked up big time. Please, anyone help!

Ok So I just finished building my first computer the other day and everything was installed and working fine.. except for one fan that refused to turn on. I figured I forgot to hook it back in after I snapped my graphics card into place. Well I tried to reorganize my wire setup while doing this and while my computer was on (stupid I know) I accidently plugged a wire into itself. Immediatly after my computer turned off and will not turn back on. My graphics card and mobo are still putting out lights but other than that it will do nothing. Reddit please help I've only had this thing for a few days and on the verge of panic. I've put over $1500 into this thing and can't afford to replace it. I guess my question is can an accidental closed circuit short out any of my oc parts? If so, which ones? Will I be able to fix it or should I take it to the computer store. Please reddit I'm desperate as fuck.

Edit- So Its definitely the mobo or psu or both. I'm going to take it into the computer store tomorow to get someone to check it out and put it all back together for me so I wont fuck it up again. Thanks for the quick feed back everyone, especially the reminder to chill from Residue.