Made a mistake and now PC won't turn on

Hello, recently I played a game of cs:go ,got mad cuz I had problems with headset then quit the game I was on youtube watching a video I still had audio issues then I got mad I pulled out the headphone cable and accidetly sticked it in the USB port next to my headphone kack then my computer acted weird then I had a no signal in my tv ( I use tv for monitor HDMI) then my pc power button was still lighting and I wanted to turn it off for some reason I holded the button for like 20 secs but it wasnt doing anything the button wa s still lighting and still no signal in tv then I plugged out the pc plug and reconnected it and now it wont turn on please help idk what to do im pancaking and I have been usong the pc for like 2 years
 
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