250F 250 died and isnt starting

I was riding my 2003 YZ250F like normal when it all of a sudden shut off, no weird sound or anything it just died. The way it just died from nowhere i thought it was the spark but it got good spark. might be fuel problem but it died so quick. anyone know where i should start troubleshooting?
 
So many things - but sounds like maybe a bad kill switch(short) or is the fuel line/filter clogged and not getting fuel to the carb or the float bowls are stuck shut and no more fuel is getting to the motor.
 
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