Guys please help,car has been running fine but for the last few days been a pain to start,only since the dark nights,this morning just about started drove to work with lights on,but when I finished work it would not start battery dead,so I carry a battery pack and it started no problem,But the power steering alarm on the dash came on and was like driving a tank home.
When I got home and engine running I checked voltage at the battery to check alternator 14.5 volts,so decided to buy new battery,fitted battery car starts ok but still have steering warning lamp on dash.

Tried lock to lock give it a run still the same,like driving a tank

Any help appreciated