If one is loose remove two or more screws and try driving in longer screws.
How to fix a door hinge that keeps closing.
How to fix a door that swings shut.
Place a large nail or small screwdriver on the bottom of the center hinge pin of your door.
If not align the hinge knuckles and tap the pins.
Check to see if the hinges are aligned correctly before you take the hardware off the door completely.
On the latch side a door is cut at a slight bevel to make it easier to close.
Open the door and check that the hinge pins are seated all the way within the hinge.
If a door binds open it grasp the knob and lift up to see if a hinge is loose.
Use a screwdriver to tighten the screws attaching the hinges to the door and the door frame.
By bending the hinge you have increased the internal resistance within the hinge so it keeps the door from moving as easily as before.
Remove the pin by placing a screwdriver under the middle hinge.
Take a hammer and long nail and tap the pin gently from the highest hinge.
Tap the screwdriver with the hammer until the pin pops up from the hinge and can be removed by hand.
If your door has only two hinges close.
Work your way from the top of the door to the bottom.
The easiest fix is to remove your middle hinge pin and put a slight bend in it.
When i say slight that means a barely noticeable bend.
Adjust the hinge to have it align correctly and snugly with the door and frame.