Do not start the drill when it is in contact with the wall- start it, get it spinning nicely, then bring it against the wall.
Same thing if you've starting drilling and stopped for whatever reason- start the drill in the hole, but without the teeth engaging the face of the wall, then bring the drill against the face once it is spinning.
Do not start the drill when it is in contact with the wall- start it, get it spinning nicely, then bring it against the wall.
Same thing if you've starting drilling and stopped for whatever reason- start the drill in the hole, but without the teeth engaging the face of the wall, then bring the drill against the face once it is spinning.