Anyone have or having issues with their bonneville not starting all the time.

Ill go out to fire it up and it does nothing. All the lights and radio etc will come
on fine. If I try to turn it over 2 or 3 times quick it will either start or all the lights
and stuff will start to blink out. There's no security light on. There is a check
engine light but its for an o2 sensor. Then if i just wait it will fire up. But it also
has a low or night idle and if I hit like my electric seat button to adjust it will lose
ppower for a second. But when I am driving its got power.... And the battery and
stuff is good I've checked em. Any help would be great thanks.