drill to unscrew handrail

I can only get 2 screws out of the hand rail, and that was with trying over and over. Has anyone found a solution to this?

I cant get ANY screws out with the drill and can't proceed with the game until I do. tried about 50 time. POS!

I failed to unscrew handrail. Help from Zylom was useless

Still a problem - I got 3 screws out - have been trying for a full day off and on - the fourth screw will not unscrew