2006 Kia Rio with squealing belts and delayed power

Sounds like the belt is slipping on the alternator. If its slipping, the alternator wont be able to generate enough power to charge the battery as you go which can definitely lead to your symptoms. If your power steering pump isn't working it may be seized. That could slip the belt enough for the alternator to not charge properly. I'd suggest taking the car in and looking for a seized pulley. Make sure your alternator spins freely in case the bearings are worn out as well. If you want to do it at home just remove the belt and you should be able to move all the pulleys by hand with the exception of the crankshaft pulley at the bottom of the engine. If any other pulley wont turn then that'll be your issue. Good luck