Tried Ctrl+Alt+Delete Some times does the trick
lol
When you do get it started & drive it does it shake/judder if so its the alternator, ifs the issue is only on starting most likely its the battery.
Five Warning Signs Your Battery Is Dead or Dying
1) Your engine cranks but doesn't start.
2) No crank, no start, no lights!
3) One day it starts fine, then next day it won't.
4) Cold cranking is hard work.
5) You've jumped it a lot already.
Another thing during the Cold times Check your battery Connections, if they are loose, corroded, The cable connections you should not be able to move them if they are properly connected to the battery.