I screwed PSU screws into my Motherboard???



Yeah I used the wrong screws, but the screws wont come out, how would i get the screws out?
 
Sometimes you can gently put the blade of something like a knife under the head of the screw lifting on it as you start to back out the screw. Once it begins to thread itself back out, you can remove the pressure. It should continue to thread its way back out.
But even with the wrong screws, no harm is done as long as they are holding the board to the standoffs.
 


So is there is no possible way I can get the screws out (which I probly can) i could just use the screws as if they were the mobo screws?
 


Yes, as long as they don't fall out later. And as long as the other MB screws are the correct ones so they make a good grounding connection with the MB's grounding rings.
Are the screws loose to turn? Just won't grip to back out?