You specifically mention window springs, so Im going to assume you have a vinyl double hung window.
If they are actually damaged, they'll most likely need to be replaced. (The springs... you normally do NOT have to replace a whole window frame just because the springs are bad, lol)
Most of the time though, its a simple matter of adjustment.
Quite often the spring itself is covered with a small piece of trim, which can be pried out.
Service techs often have a special tool to hook onto the spring to adjust it, but you can use a pair of pliers.
Slide the window up just a bit, so you can tilt it forward (for tilt out windows). You should now be able to unhook the spring from the bottom of the window. The spring usually has a 'rivet', or 'pin' thru the end of it, and this hooks into a receiver.... if you push down on the spring, you should be able to get it out from under the 'catch'.
Rotate the spring, so it is 'wound tighter', to increase the 'lift' on the window sash. You'll want to do both sides about the same, to keep it from getting in a bind. If the window sash itself is in your way, to make this adjustment, you can remove it.
Some hardware, or building supply stores do carry new spring assemblies, if you need to replace the one you have.
To replace a spring assembly, tilt the window forward, and give it a twist.... lift up one side or the other.... and the sash comes right out. There is usually a screw at the top holding the spring in place.
Ive done a lot of window adjustments like this, in mobile and modular homes, with double hung windows. Doesnt take long, just remember to keep the two springs at the same tension. IF youve happened to have overtightened the springs, you'll find the window has to be 'pushed' down the last couple of inches... simply unwind a little tension from the springs.
Just a side note.... Use a little spray wax to lubricate the tracks on the side of the window frame. Never use an oil based lubricant (and this includes most silicon sprays) on vinyl.
Have Fun